Home / 42,587.40-64,200-39,732.96

Finding the Fourth Proportional to 42,587.40, 64,200 and 39,732.96

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Solution

The fourth proportional to 42,587.40, 64,200 and 39,732.96 is: 59,896.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,587.40 : 64,200 = 39,732.96 : x
  2. Step 2: Convert to fraction form
    42,587.40/64,200 = 39,732.96/x
  3. Step 3: Cross multiply
    42,587.40x = 64,200 × 39,732.96
  4. Step 4: Simplify right side
    42,587.40x = 2,550,856,032
  5. Step 5: Solve for x
    x = 2,550,856,032/42,587.40
  6. Step 6: Final answer
    x = 59,896.97

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.