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Finding the Fourth Proportional to 56,149.92, 77,487.84 and 30,657.60

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Solution

The fourth proportional to 56,149.92, 77,487.84 and 30,657.60 is: 42,308.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,149.92 : 77,487.84 = 30,657.60 : x
  2. Step 2: Convert to fraction form
    56,149.92/77,487.84 = 30,657.60/x
  3. Step 3: Cross multiply
    56,149.92x = 77,487.84 × 30,657.60
  4. Step 4: Simplify right side
    56,149.92x = 2,375,591,203.58
  5. Step 5: Solve for x
    x = 2,375,591,203.58/56,149.92
  6. Step 6: Final answer
    x = 42,308.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.