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Finding the Fourth Proportional to 61,612.50, 85,025.28 and 33,318.18

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Solution

The fourth proportional to 61,612.50, 85,025.28 and 33,318.18 is: 45,979.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,612.50 : 85,025.28 = 33,318.18 : x
  2. Step 2: Convert to fraction form
    61,612.50/85,025.28 = 33,318.18/x
  3. Step 3: Cross multiply
    61,612.50x = 85,025.28 × 33,318.18
  4. Step 4: Simplify right side
    61,612.50x = 2,832,887,583.59
  5. Step 5: Solve for x
    x = 2,832,887,583.59/61,612.50
  6. Step 6: Final answer
    x = 45,979.10

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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.