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Finding the Fourth Proportional to 92,454.90, 138,609.45 and 39,821.10

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Solution

The fourth proportional to 92,454.90, 138,609.45 and 39,821.10 is: 59,700.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,454.90 : 138,609.45 = 39,821.10 : x
  2. Step 2: Convert to fraction form
    92,454.90/138,609.45 = 39,821.10/x
  3. Step 3: Cross multiply
    92,454.90x = 138,609.45 × 39,821.10
  4. Step 4: Simplify right side
    92,454.90x = 5,519,580,769.40
  5. Step 5: Solve for x
    x = 5,519,580,769.40/92,454.90
  6. Step 6: Final answer
    x = 59,700.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.