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Finding the Fourth Proportional to 61,478.80, 92,218.20 and 43,764.10

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Solution

The fourth proportional to 61,478.80, 92,218.20 and 43,764.10 is: 65,646.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,478.80 : 92,218.20 = 43,764.10 : x
  2. Step 2: Convert to fraction form
    61,478.80/92,218.20 = 43,764.10/x
  3. Step 3: Cross multiply
    61,478.80x = 92,218.20 × 43,764.10
  4. Step 4: Simplify right side
    61,478.80x = 4,035,846,526.62
  5. Step 5: Solve for x
    x = 4,035,846,526.62/61,478.80
  6. Step 6: Final answer
    x = 65,646.15

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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.