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Finding the Fourth Proportional to 79,082.40, 109,132.70 and 45,089.80

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Solution

The fourth proportional to 79,082.40, 109,132.70 and 45,089.80 is: 62,223.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,082.40 : 109,132.70 = 45,089.80 : x
  2. Step 2: Convert to fraction form
    79,082.40/109,132.70 = 45,089.80/x
  3. Step 3: Cross multiply
    79,082.40x = 109,132.70 × 45,089.80
  4. Step 4: Simplify right side
    79,082.40x = 4,920,771,616.46
  5. Step 5: Solve for x
    x = 4,920,771,616.46/79,082.40
  6. Step 6: Final answer
    x = 62,223.35

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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.