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Finding the Fourth Proportional to 70,440.82, 97,210.74 and 38,609.71

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Solution

The fourth proportional to 70,440.82, 97,210.74 and 38,609.71 is: 53,282.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,440.82 : 97,210.74 = 38,609.71 : x
  2. Step 2: Convert to fraction form
    70,440.82/97,210.74 = 38,609.71/x
  3. Step 3: Cross multiply
    70,440.82x = 97,210.74 × 38,609.71
  4. Step 4: Simplify right side
    70,440.82x = 3,753,278,480.29
  5. Step 5: Solve for x
    x = 3,753,278,480.29/70,440.82
  6. Step 6: Final answer
    x = 53,282.72

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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.