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Finding the Fourth Proportional to 71,151.60, 98,181.50 and 39,316.16

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Solution

The fourth proportional to 71,151.60, 98,181.50 and 39,316.16 is: 54,252.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,151.60 : 98,181.50 = 39,316.16 : x
  2. Step 2: Convert to fraction form
    71,151.60/98,181.50 = 39,316.16/x
  3. Step 3: Cross multiply
    71,151.60x = 98,181.50 × 39,316.16
  4. Step 4: Simplify right side
    71,151.60x = 3,860,119,563.04
  5. Step 5: Solve for x
    x = 3,860,119,563.04/71,151.60
  6. Step 6: Final answer
    x = 54,252.04

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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.