Home / 81,395.28-112,334.76-49,582.80

Finding the Fourth Proportional to 81,395.28, 112,334.76 and 49,582.80

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Solution

The fourth proportional to 81,395.28, 112,334.76 and 49,582.80 is: 68,429.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,395.28 : 112,334.76 = 49,582.80 : x
  2. Step 2: Convert to fraction form
    81,395.28/112,334.76 = 49,582.80/x
  3. Step 3: Cross multiply
    81,395.28x = 112,334.76 × 49,582.80
  4. Step 4: Simplify right side
    81,395.28x = 5,569,871,938.13
  5. Step 5: Solve for x
    x = 5,569,871,938.13/81,395.28
  6. Step 6: Final answer
    x = 68,429.91

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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.