Home / 42,587.55-63,920.81-21,542.53

Finding the Fourth Proportional to 42,587.55, 63,920.81 and 21,542.53

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Solution

The fourth proportional to 42,587.55, 63,920.81 and 21,542.53 is: 32,333.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,587.55 : 63,920.81 = 21,542.53 : x
  2. Step 2: Convert to fraction form
    42,587.55/63,920.81 = 21,542.53/x
  3. Step 3: Cross multiply
    42,587.55x = 63,920.81 × 21,542.53
  4. Step 4: Simplify right side
    42,587.55x = 1,377,015,967.05
  5. Step 5: Solve for x
    x = 1,377,015,967.05/42,587.55
  6. Step 6: Final answer
    x = 32,333.77

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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.