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Finding the Fourth Proportional to 70,752.62, 97,639.08 and 38,920.70

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Solution

The fourth proportional to 70,752.62, 97,639.08 and 38,920.70 is: 53,710.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,752.62 : 97,639.08 = 38,920.70 : x
  2. Step 2: Convert to fraction form
    70,752.62/97,639.08 = 38,920.70/x
  3. Step 3: Cross multiply
    70,752.62x = 97,639.08 × 38,920.70
  4. Step 4: Simplify right side
    70,752.62x = 3,800,181,340.96
  5. Step 5: Solve for x
    x = 3,800,181,340.96/70,752.62
  6. Step 6: Final answer
    x = 53,710.82

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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.