Home / 77,346,765,767.75-116,020,121,344.42-20,685,156,129.16

Finding the Fourth Proportional to 77,346,765,767.75, 116,020,121,344.42 and 20,685,156,129.16

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Solution

The fourth proportional to 77,346,765,767.75, 116,020,121,344.42 and 20,685,156,129.16 is: 31,027,726,890.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,346,765,767.75 : 116,020,121,344.42 = 20,685,156,129.16 : x
  2. Step 2: Convert to fraction form
    77,346,765,767.75/116,020,121,344.42 = 20,685,156,129.16/x
  3. Step 3: Cross multiply
    77,346,765,767.75x = 116,020,121,344.42 × 20,685,156,129.16
  4. Step 4: Simplify right side
    77,346,765,767.75x = 2,399,894,324,133,184,405,504
  5. Step 5: Solve for x
    x = 2,399,894,324,133,184,405,504/77,346,765,767.75
  6. Step 6: Final answer
    x = 31,027,726,890.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.