Home / 70,685.22-97,545.03-38,853.78

Finding the Fourth Proportional to 70,685.22, 97,545.03 and 38,853.78

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Solution

The fourth proportional to 70,685.22, 97,545.03 and 38,853.78 is: 53,617.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,685.22 : 97,545.03 = 38,853.78 : x
  2. Step 2: Convert to fraction form
    70,685.22/97,545.03 = 38,853.78/x
  3. Step 3: Cross multiply
    70,685.22x = 97,545.03 × 38,853.78
  4. Step 4: Simplify right side
    70,685.22x = 3,789,993,135.71
  5. Step 5: Solve for x
    x = 3,789,993,135.71/70,685.22
  6. Step 6: Final answer
    x = 53,617.90

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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.