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Finding the Fourth Proportional to 60,322.60, 90,581.10 and 40,688.20

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Solution

The fourth proportional to 60,322.60, 90,581.10 and 40,688.20 is: 61,097.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,322.60 : 90,581.10 = 40,688.20 : x
  2. Step 2: Convert to fraction form
    60,322.60/90,581.10 = 40,688.20/x
  3. Step 3: Cross multiply
    60,322.60x = 90,581.10 × 40,688.20
  4. Step 4: Simplify right side
    60,322.60x = 3,685,581,913.02
  5. Step 5: Solve for x
    x = 3,685,581,913.02/60,322.60
  6. Step 6: Final answer
    x = 61,097.86

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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.