Home / 54,009.20-81,013.80-49,732.40

Finding the Fourth Proportional to 54,009.20, 81,013.80 and 49,732.40

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Solution

The fourth proportional to 54,009.20, 81,013.80 and 49,732.40 is: 74,598.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,009.20 : 81,013.80 = 49,732.40 : x
  2. Step 2: Convert to fraction form
    54,009.20/81,013.80 = 49,732.40/x
  3. Step 3: Cross multiply
    54,009.20x = 81,013.80 × 49,732.40
  4. Step 4: Simplify right side
    54,009.20x = 4,029,010,707.12
  5. Step 5: Solve for x
    x = 4,029,010,707.12/54,009.20
  6. Step 6: Final answer
    x = 74,598.60

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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.