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Finding the Fourth Proportional to 70,459.80, 97,240.65 and 38,634.90

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Solution

The fourth proportional to 70,459.80, 97,240.65 and 38,634.90 is: 53,319.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,459.80 : 97,240.65 = 38,634.90 : x
  2. Step 2: Convert to fraction form
    70,459.80/97,240.65 = 38,634.90/x
  3. Step 3: Cross multiply
    70,459.80x = 97,240.65 × 38,634.90
  4. Step 4: Simplify right side
    70,459.80x = 3,756,882,788.69
  5. Step 5: Solve for x
    x = 3,756,882,788.69/70,459.80
  6. Step 6: Final answer
    x = 53,319.52

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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.