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Finding the Fourth Proportional to 71,191.80, 98,237.76 and 39,356.34

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Solution

The fourth proportional to 71,191.80, 98,237.76 and 39,356.34 is: 54,307.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,191.80 : 98,237.76 = 39,356.34 : x
  2. Step 2: Convert to fraction form
    71,191.80/98,237.76 = 39,356.34/x
  3. Step 3: Cross multiply
    71,191.80x = 98,237.76 × 39,356.34
  4. Step 4: Simplify right side
    71,191.80x = 3,866,278,683.40
  5. Step 5: Solve for x
    x = 3,866,278,683.40/71,191.80
  6. Step 6: Final answer
    x = 54,307.92

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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.