Home / 77,077.76-115,572.72-30,305.12

Finding the Fourth Proportional to 77,077.76, 115,572.72 and 30,305.12

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Solution

The fourth proportional to 77,077.76, 115,572.72 and 30,305.12 is: 45,440.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,077.76 : 115,572.72 = 30,305.12 : x
  2. Step 2: Convert to fraction form
    77,077.76/115,572.72 = 30,305.12/x
  3. Step 3: Cross multiply
    77,077.76x = 115,572.72 × 30,305.12
  4. Step 4: Simplify right side
    77,077.76x = 3,502,445,148.33
  5. Step 5: Solve for x
    x = 3,502,445,148.33/77,077.76
  6. Step 6: Final answer
    x = 45,440.41

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1.5x scale

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.