Home / 72,531.28-108,827.88-40,965.04

Finding the Fourth Proportional to 72,531.28, 108,827.88 and 40,965.04

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Solution

The fourth proportional to 72,531.28, 108,827.88 and 40,965.04 is: 61,465.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,531.28 : 108,827.88 = 40,965.04 : x
  2. Step 2: Convert to fraction form
    72,531.28/108,827.88 = 40,965.04/x
  3. Step 3: Cross multiply
    72,531.28x = 108,827.88 × 40,965.04
  4. Step 4: Simplify right side
    72,531.28x = 4,458,138,457.32
  5. Step 5: Solve for x
    x = 4,458,138,457.32/72,531.28
  6. Step 6: Final answer
    x = 61,465.05

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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.