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Finding the Fourth Proportional to 62,693.34, 93,979.53 and 21,117.66

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Solution

The fourth proportional to 62,693.34, 93,979.53 and 21,117.66 is: 31,656.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,693.34 : 93,979.53 = 21,117.66 : x
  2. Step 2: Convert to fraction form
    62,693.34/93,979.53 = 21,117.66/x
  3. Step 3: Cross multiply
    62,693.34x = 93,979.53 × 21,117.66
  4. Step 4: Simplify right side
    62,693.34x = 1,984,627,761.50
  5. Step 5: Solve for x
    x = 1,984,627,761.50/62,693.34
  6. Step 6: Final answer
    x = 31,656.12

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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.