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Finding the Fourth Proportional to 71,179.80, 98,225.06 and 38,913.82

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Solution

The fourth proportional to 71,179.80, 98,225.06 and 38,913.82 is: 53,699.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,179.80 : 98,225.06 = 38,913.82 : x
  2. Step 2: Convert to fraction form
    71,179.80/98,225.06 = 38,913.82/x
  3. Step 3: Cross multiply
    71,179.80x = 98,225.06 × 38,913.82
  4. Step 4: Simplify right side
    71,179.80x = 3,822,311,864.20
  5. Step 5: Solve for x
    x = 3,822,311,864.20/71,179.80
  6. Step 6: Final answer
    x = 53,699.39

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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.