Home / 71,534.48-98,706.20-39,702.70

Finding the Fourth Proportional to 71,534.48, 98,706.20 and 39,702.70

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Solution

The fourth proportional to 71,534.48, 98,706.20 and 39,702.70 is: 54,783.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,534.48 : 98,706.20 = 39,702.70 : x
  2. Step 2: Convert to fraction form
    71,534.48/98,706.20 = 39,702.70/x
  3. Step 3: Cross multiply
    71,534.48x = 98,706.20 × 39,702.70
  4. Step 4: Simplify right side
    71,534.48x = 3,918,902,646.74
  5. Step 5: Solve for x
    x = 3,918,902,646.74/71,534.48
  6. Step 6: Final answer
    x = 54,783.41

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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.