Home / 80,542.50-111,253.24-61,305.40

Finding the Fourth Proportional to 80,542.50, 111,253.24 and 61,305.40

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Solution

The fourth proportional to 80,542.50, 111,253.24 and 61,305.40 is: 84,681.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,542.50 : 111,253.24 = 61,305.40 : x
  2. Step 2: Convert to fraction form
    80,542.50/111,253.24 = 61,305.40/x
  3. Step 3: Cross multiply
    80,542.50x = 111,253.24 × 61,305.40
  4. Step 4: Simplify right side
    80,542.50x = 6,820,424,379.50
  5. Step 5: Solve for x
    x = 6,820,424,379.50/80,542.50
  6. Step 6: Final answer
    x = 84,681.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.