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Finding the Fourth Proportional to 90,043.76, 124,260.78 and 49,208.71

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Solution

The fourth proportional to 90,043.76, 124,260.78 and 49,208.71 is: 67,908.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,043.76 : 124,260.78 = 49,208.71 : x
  2. Step 2: Convert to fraction form
    90,043.76/124,260.78 = 49,208.71/x
  3. Step 3: Cross multiply
    90,043.76x = 124,260.78 × 49,208.71
  4. Step 4: Simplify right side
    90,043.76x = 6,114,712,687.39
  5. Step 5: Solve for x
    x = 6,114,712,687.39/90,043.76
  6. Step 6: Final answer
    x = 67,908.23

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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.