Home / 54,287.20-81,430.80-48,930.40

Finding the Fourth Proportional to 54,287.20, 81,430.80 and 48,930.40

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Solution

The fourth proportional to 54,287.20, 81,430.80 and 48,930.40 is: 73,395.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,287.20 : 81,430.80 = 48,930.40 : x
  2. Step 2: Convert to fraction form
    54,287.20/81,430.80 = 48,930.40/x
  3. Step 3: Cross multiply
    54,287.20x = 81,430.80 × 48,930.40
  4. Step 4: Simplify right side
    54,287.20x = 3,984,441,616.32
  5. Step 5: Solve for x
    x = 3,984,441,616.32/54,287.20
  6. Step 6: Final answer
    x = 73,395.60

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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.