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Finding the Fourth Proportional to 80,570.39, 120,658.76 and 69,547.91

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Solution

The fourth proportional to 80,570.39, 120,658.76 and 69,547.91 is: 104,151.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,570.39 : 120,658.76 = 69,547.91 : x
  2. Step 2: Convert to fraction form
    80,570.39/120,658.76 = 69,547.91/x
  3. Step 3: Cross multiply
    80,570.39x = 120,658.76 × 69,547.91
  4. Step 4: Simplify right side
    80,570.39x = 8,391,564,535.10
  5. Step 5: Solve for x
    x = 8,391,564,535.10/80,570.39
  6. Step 6: Final answer
    x = 104,151.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.