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Finding the Fourth Proportional to 42,666.88, 64,001.80 and 11,502.88

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Solution

The fourth proportional to 42,666.88, 64,001.80 and 11,502.88 is: 17,254.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,666.88 : 64,001.80 = 11,502.88 : x
  2. Step 2: Convert to fraction form
    42,666.88/64,001.80 = 11,502.88/x
  3. Step 3: Cross multiply
    42,666.88x = 64,001.80 × 11,502.88
  4. Step 4: Simplify right side
    42,666.88x = 736,205,025.18
  5. Step 5: Solve for x
    x = 736,205,025.18/42,666.88
  6. Step 6: Final answer
    x = 17,254.72

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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.