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Finding the Fourth Proportional to 71,030.98, 98,023.31 and 38,765.85

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Solution

The fourth proportional to 71,030.98, 98,023.31 and 38,765.85 is: 53,497.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,030.98 : 98,023.31 = 38,765.85 : x
  2. Step 2: Convert to fraction form
    71,030.98/98,023.31 = 38,765.85/x
  3. Step 3: Cross multiply
    71,030.98x = 98,023.31 × 38,765.85
  4. Step 4: Simplify right side
    71,030.98x = 3,799,956,931.96
  5. Step 5: Solve for x
    x = 3,799,956,931.96/71,030.98
  6. Step 6: Final answer
    x = 53,497.18

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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.