Home / 42,502.20-63,656.10-21,701.40

Finding the Fourth Proportional to 42,502.20, 63,656.10 and 21,701.40

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Solution

The fourth proportional to 42,502.20, 63,656.10 and 21,701.40 is: 32,502.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,502.20 : 63,656.10 = 21,701.40 : x
  2. Step 2: Convert to fraction form
    42,502.20/63,656.10 = 21,701.40/x
  3. Step 3: Cross multiply
    42,502.20x = 63,656.10 × 21,701.40
  4. Step 4: Simplify right side
    42,502.20x = 1,381,426,488.54
  5. Step 5: Solve for x
    x = 1,381,426,488.54/42,502.20
  6. Step 6: Final answer
    x = 32,502.47

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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.