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Finding the Fourth Proportional to 42,689.52, 64,037.52 and 11,524.32

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Solution

The fourth proportional to 42,689.52, 64,037.52 and 11,524.32 is: 17,287.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,689.52 : 64,037.52 = 11,524.32 : x
  2. Step 2: Convert to fraction form
    42,689.52/64,037.52 = 11,524.32/x
  3. Step 3: Cross multiply
    42,689.52x = 64,037.52 × 11,524.32
  4. Step 4: Simplify right side
    42,689.52x = 737,988,872.49
  5. Step 5: Solve for x
    x = 737,988,872.49/42,689.52
  6. Step 6: Final answer
    x = 17,287.35

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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.