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Finding the Fourth Proportional to 79,125.90, 109,244.70 and 70,613.43

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Solution

The fourth proportional to 79,125.90, 109,244.70 and 70,613.43 is: 97,492.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,125.90 : 109,244.70 = 70,613.43 : x
  2. Step 2: Convert to fraction form
    79,125.90/109,244.70 = 70,613.43/x
  3. Step 3: Cross multiply
    79,125.90x = 109,244.70 × 70,613.43
  4. Step 4: Simplify right side
    79,125.90x = 7,714,142,976.32
  5. Step 5: Solve for x
    x = 7,714,142,976.32/79,125.90
  6. Step 6: Final answer
    x = 97,492.01

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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.