Home / 48,139.85-72,186.99-28,155.13

Finding the Fourth Proportional to 48,139.85, 72,186.99 and 28,155.13

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Solution

The fourth proportional to 48,139.85, 72,186.99 and 28,155.13 is: 42,219.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,139.85 : 72,186.99 = 28,155.13 : x
  2. Step 2: Convert to fraction form
    48,139.85/72,186.99 = 28,155.13/x
  3. Step 3: Cross multiply
    48,139.85x = 72,186.99 × 28,155.13
  4. Step 4: Simplify right side
    48,139.85x = 2,032,433,586.05
  5. Step 5: Solve for x
    x = 2,032,433,586.05/48,139.85
  6. Step 6: Final answer
    x = 42,219.36

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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.