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Finding the Fourth Proportional to 70,521.03, 97,319.07 and 38,691.68

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Solution

The fourth proportional to 70,521.03, 97,319.07 and 38,691.68 is: 53,394.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,521.03 : 97,319.07 = 38,691.68 : x
  2. Step 2: Convert to fraction form
    70,521.03/97,319.07 = 38,691.68/x
  3. Step 3: Cross multiply
    70,521.03x = 97,319.07 × 38,691.68
  4. Step 4: Simplify right side
    70,521.03x = 3,765,437,827.74
  5. Step 5: Solve for x
    x = 3,765,437,827.74/70,521.03
  6. Step 6: Final answer
    x = 53,394.54

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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.