Home / 81,548.57-122,331.26-28,240.45

Finding the Fourth Proportional to 81,548.57, 122,331.26 and 28,240.45

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Solution

The fourth proportional to 81,548.57, 122,331.26 and 28,240.45 is: 42,363.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,548.57 : 122,331.26 = 28,240.45 : x
  2. Step 2: Convert to fraction form
    81,548.57/122,331.26 = 28,240.45/x
  3. Step 3: Cross multiply
    81,548.57x = 122,331.26 × 28,240.45
  4. Step 4: Simplify right side
    81,548.57x = 3,454,689,831.47
  5. Step 5: Solve for x
    x = 3,454,689,831.47/81,548.57
  6. Step 6: Final answer
    x = 42,363.59

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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.