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Finding the Fourth Proportional to 70,084.80, 96,726.29 and 39,864.29

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Solution

The fourth proportional to 70,084.80, 96,726.29 and 39,864.29 is: 55,017.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,084.80 : 96,726.29 = 39,864.29 : x
  2. Step 2: Convert to fraction form
    70,084.80/96,726.29 = 39,864.29/x
  3. Step 3: Cross multiply
    70,084.80x = 96,726.29 × 39,864.29
  4. Step 4: Simplify right side
    70,084.80x = 3,855,924,192.23
  5. Step 5: Solve for x
    x = 3,855,924,192.23/70,084.80
  6. Step 6: Final answer
    x = 55,017.98

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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.