Home / 81,391.28-112,331.36-58,803.36

Finding the Fourth Proportional to 81,391.28, 112,331.36 and 58,803.36

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Solution

The fourth proportional to 81,391.28, 112,331.36 and 58,803.36 is: 81,156.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,391.28 : 112,331.36 = 58,803.36 : x
  2. Step 2: Convert to fraction form
    81,391.28/112,331.36 = 58,803.36/x
  3. Step 3: Cross multiply
    81,391.28x = 112,331.36 × 58,803.36
  4. Step 4: Simplify right side
    81,391.28x = 6,605,461,401.37
  5. Step 5: Solve for x
    x = 6,605,461,401.37/81,391.28
  6. Step 6: Final answer
    x = 81,156.87

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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.