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Finding the Fourth Proportional to 71,230.60, 98,267.34 and 42,920.20

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Solution

The fourth proportional to 71,230.60, 98,267.34 and 42,920.20 is: 59,211.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,230.60 : 98,267.34 = 42,920.20 : x
  2. Step 2: Convert to fraction form
    71,230.60/98,267.34 = 42,920.20/x
  3. Step 3: Cross multiply
    71,230.60x = 98,267.34 × 42,920.20
  4. Step 4: Simplify right side
    71,230.60x = 4,217,653,886.27
  5. Step 5: Solve for x
    x = 4,217,653,886.27/71,230.60
  6. Step 6: Final answer
    x = 59,211.26

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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.