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Finding the Fourth Proportional to 79,132.92, 109,254.36 and 70,620.40

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Solution

The fourth proportional to 79,132.92, 109,254.36 and 70,620.40 is: 97,501.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,132.92 : 109,254.36 = 70,620.40 : x
  2. Step 2: Convert to fraction form
    79,132.92/109,254.36 = 70,620.40/x
  3. Step 3: Cross multiply
    79,132.92x = 109,254.36 × 70,620.40
  4. Step 4: Simplify right side
    79,132.92x = 7,715,586,604.94
  5. Step 5: Solve for x
    x = 7,715,586,604.94/79,132.92
  6. Step 6: Final answer
    x = 97,501.60

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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.