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Finding the Fourth Proportional to 64,124.64, 88,516.68 and 57,398.40

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Solution

The fourth proportional to 64,124.64, 88,516.68 and 57,398.40 is: 79,231.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,124.64 : 88,516.68 = 57,398.40 : x
  2. Step 2: Convert to fraction form
    64,124.64/88,516.68 = 57,398.40/x
  3. Step 3: Cross multiply
    64,124.64x = 88,516.68 × 57,398.40
  4. Step 4: Simplify right side
    64,124.64x = 5,080,715,805.31
  5. Step 5: Solve for x
    x = 5,080,715,805.31/64,124.64
  6. Step 6: Final answer
    x = 79,231.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.