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Finding the Fourth Proportional to 71,218.66, 98,277.75 and 38,946.86

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Solution

The fourth proportional to 71,218.66, 98,277.75 and 38,946.86 is: 53,744.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,218.66 : 98,277.75 = 38,946.86 : x
  2. Step 2: Convert to fraction form
    71,218.66/98,277.75 = 38,946.86/x
  3. Step 3: Cross multiply
    71,218.66x = 98,277.75 × 38,946.86
  4. Step 4: Simplify right side
    71,218.66x = 3,827,609,278.98
  5. Step 5: Solve for x
    x = 3,827,609,278.98/71,218.66
  6. Step 6: Final answer
    x = 53,744.47

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1.5x scale

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.