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Finding the Fourth Proportional to 71,483.20, 98,658.64 and 39,662.35

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Solution

The fourth proportional to 71,483.20, 98,658.64 and 39,662.35 is: 54,740.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,483.20 : 98,658.64 = 39,662.35 : x
  2. Step 2: Convert to fraction form
    71,483.20/98,658.64 = 39,662.35/x
  3. Step 3: Cross multiply
    71,483.20x = 98,658.64 × 39,662.35
  4. Step 4: Simplify right side
    71,483.20x = 3,913,033,016.91
  5. Step 5: Solve for x
    x = 3,913,033,016.91/71,483.20
  6. Step 6: Final answer
    x = 54,740.60

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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.