Home / 77,430.32-116,120.88-52,629.74

Finding the Fourth Proportional to 77,430.32, 116,120.88 and 52,629.74

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Solution

The fourth proportional to 77,430.32, 116,120.88 and 52,629.74 is: 78,927.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,430.32 : 116,120.88 = 52,629.74 : x
  2. Step 2: Convert to fraction form
    77,430.32/116,120.88 = 52,629.74/x
  3. Step 3: Cross multiply
    77,430.32x = 116,120.88 × 52,629.74
  4. Step 4: Simplify right side
    77,430.32x = 6,111,412,379.02
  5. Step 5: Solve for x
    x = 6,111,412,379.02/77,430.32
  6. Step 6: Final answer
    x = 78,927.89

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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.