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Finding the Fourth Proportional to 71,397.88, 98,956.45 and 70,070.20

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Solution

The fourth proportional to 71,397.88, 98,956.45 and 70,070.20 is: 97,116.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,397.88 : 98,956.45 = 70,070.20 : x
  2. Step 2: Convert to fraction form
    71,397.88/98,956.45 = 70,070.20/x
  3. Step 3: Cross multiply
    71,397.88x = 98,956.45 × 70,070.20
  4. Step 4: Simplify right side
    71,397.88x = 6,933,898,242.79
  5. Step 5: Solve for x
    x = 6,933,898,242.79/71,397.88
  6. Step 6: Final answer
    x = 97,116.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.