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Finding the Fourth Proportional to 54,018.60, 81,100.80 and 42,937.80

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Solution

The fourth proportional to 54,018.60, 81,100.80 and 42,937.80 is: 64,464.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,018.60 : 81,100.80 = 42,937.80 : x
  2. Step 2: Convert to fraction form
    54,018.60/81,100.80 = 42,937.80/x
  3. Step 3: Cross multiply
    54,018.60x = 81,100.80 × 42,937.80
  4. Step 4: Simplify right side
    54,018.60x = 3,482,289,930.24
  5. Step 5: Solve for x
    x = 3,482,289,930.24/54,018.60
  6. Step 6: Final answer
    x = 64,464.65

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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.