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Finding the Fourth Proportional to 90,439, 124,806.14 and 50,156.48

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Solution

The fourth proportional to 90,439, 124,806.14 and 50,156.48 is: 69,216.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,439 : 124,806.14 = 50,156.48 : x
  2. Step 2: Convert to fraction form
    90,439/124,806.14 = 50,156.48/x
  3. Step 3: Cross multiply
    90,439x = 124,806.14 × 50,156.48
  4. Step 4: Simplify right side
    90,439x = 6,259,836,664.79
  5. Step 5: Solve for x
    x = 6,259,836,664.79/90,439
  6. Step 6: Final answer
    x = 69,216.12

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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.