Home / 81,233.78-112,070.13-51,408.50

Finding the Fourth Proportional to 81,233.78, 112,070.13 and 51,408.50

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Solution

The fourth proportional to 81,233.78, 112,070.13 and 51,408.50 is: 70,923.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,233.78 : 112,070.13 = 51,408.50 : x
  2. Step 2: Convert to fraction form
    81,233.78/112,070.13 = 51,408.50/x
  3. Step 3: Cross multiply
    81,233.78x = 112,070.13 × 51,408.50
  4. Step 4: Simplify right side
    81,233.78x = 5,761,357,278.11
  5. Step 5: Solve for x
    x = 5,761,357,278.11/81,233.78
  6. Step 6: Final answer
    x = 70,923.17

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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.