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Finding the Fourth Proportional to 54,353.80, 81,490.20 and 28,077.40

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Solution

The fourth proportional to 54,353.80, 81,490.20 and 28,077.40 is: 42,095.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,353.80 : 81,490.20 = 28,077.40 : x
  2. Step 2: Convert to fraction form
    54,353.80/81,490.20 = 28,077.40/x
  3. Step 3: Cross multiply
    54,353.80x = 81,490.20 × 28,077.40
  4. Step 4: Simplify right side
    54,353.80x = 2,288,032,941.48
  5. Step 5: Solve for x
    x = 2,288,032,941.48/54,353.80
  6. Step 6: Final answer
    x = 42,095.18

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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.