Home / 71,543.06-98,729.34-39,711.88

Finding the Fourth Proportional to 71,543.06, 98,729.34 and 39,711.88

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Solution

The fourth proportional to 71,543.06, 98,729.34 and 39,711.88 is: 54,802.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,543.06 : 98,729.34 = 39,711.88 : x
  2. Step 2: Convert to fraction form
    71,543.06/98,729.34 = 39,711.88/x
  3. Step 3: Cross multiply
    71,543.06x = 98,729.34 × 39,711.88
  4. Step 4: Simplify right side
    71,543.06x = 3,920,727,702.56
  5. Step 5: Solve for x
    x = 3,920,727,702.56/71,543.06
  6. Step 6: Final answer
    x = 54,802.35

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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.