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Finding the Fourth Proportional to 40,689.20, 60,904.20 and 29,025.20

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Solution

The fourth proportional to 40,689.20, 60,904.20 and 29,025.20 is: 43,445.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,689.20 : 60,904.20 = 29,025.20 : x
  2. Step 2: Convert to fraction form
    40,689.20/60,904.20 = 29,025.20/x
  3. Step 3: Cross multiply
    40,689.20x = 60,904.20 × 29,025.20
  4. Step 4: Simplify right side
    40,689.20x = 1,767,756,585.84
  5. Step 5: Solve for x
    x = 1,767,756,585.84/40,689.20
  6. Step 6: Final answer
    x = 43,445.35

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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.