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Finding the Fourth Proportional to 71,230.10, 98,266.65 and 42,919.70

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Solution

The fourth proportional to 71,230.10, 98,266.65 and 42,919.70 is: 59,210.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,230.10 : 98,266.65 = 42,919.70 : x
  2. Step 2: Convert to fraction form
    71,230.10/98,266.65 = 42,919.70/x
  3. Step 3: Cross multiply
    71,230.10x = 98,266.65 × 42,919.70
  4. Step 4: Simplify right side
    71,230.10x = 4,217,575,138.01
  5. Step 5: Solve for x
    x = 4,217,575,138.01/71,230.10
  6. Step 6: Final answer
    x = 59,210.57

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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.