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Finding the Fourth Proportional to 90,101.46, 124,335 and 49,812.87

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Solution

The fourth proportional to 90,101.46, 124,335 and 49,812.87 is: 68,738.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,101.46 : 124,335 = 49,812.87 : x
  2. Step 2: Convert to fraction form
    90,101.46/124,335 = 49,812.87/x
  3. Step 3: Cross multiply
    90,101.46x = 124,335 × 49,812.87
  4. Step 4: Simplify right side
    90,101.46x = 6,193,483,657.71
  5. Step 5: Solve for x
    x = 6,193,483,657.71/90,101.46
  6. Step 6: Final answer
    x = 68,738.99

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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.