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Finding the Fourth Proportional to 70,148.79, 96,781.29 and 39,926.52

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Solution

The fourth proportional to 70,148.79, 96,781.29 and 39,926.52 is: 55,084.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,148.79 : 96,781.29 = 39,926.52 : x
  2. Step 2: Convert to fraction form
    70,148.79/96,781.29 = 39,926.52/x
  3. Step 3: Cross multiply
    70,148.79x = 96,781.29 × 39,926.52
  4. Step 4: Simplify right side
    70,148.79x = 3,864,140,110.81
  5. Step 5: Solve for x
    x = 3,864,140,110.81/70,148.79
  6. Step 6: Final answer
    x = 55,084.91

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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.