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Finding the Fourth Proportional to 61,480.40, 92,220.60 and 54,870.80

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Solution

The fourth proportional to 61,480.40, 92,220.60 and 54,870.80 is: 82,306.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,480.40 : 92,220.60 = 54,870.80 : x
  2. Step 2: Convert to fraction form
    61,480.40/92,220.60 = 54,870.80/x
  3. Step 3: Cross multiply
    61,480.40x = 92,220.60 × 54,870.80
  4. Step 4: Simplify right side
    61,480.40x = 5,060,218,098.48
  5. Step 5: Solve for x
    x = 5,060,218,098.48/61,480.40
  6. Step 6: Final answer
    x = 82,306.20

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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.