Home / 81,141.24-111,980.17-45,331.45

Finding the Fourth Proportional to 81,141.24, 111,980.17 and 45,331.45

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Solution

The fourth proportional to 81,141.24, 111,980.17 and 45,331.45 is: 62,560.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,141.24 : 111,980.17 = 45,331.45 : x
  2. Step 2: Convert to fraction form
    81,141.24/111,980.17 = 45,331.45/x
  3. Step 3: Cross multiply
    81,141.24x = 111,980.17 × 45,331.45
  4. Step 4: Simplify right side
    81,141.24x = 5,076,223,254.06
  5. Step 5: Solve for x
    x = 5,076,223,254.06/81,141.24
  6. Step 6: Final answer
    x = 62,560.33

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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.