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Finding the Fourth Proportional to 90,047.61, 124,259.52 and 49,761

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Solution

The fourth proportional to 90,047.61, 124,259.52 and 49,761 is: 68,666.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,047.61 : 124,259.52 = 49,761 : x
  2. Step 2: Convert to fraction form
    90,047.61/124,259.52 = 49,761/x
  3. Step 3: Cross multiply
    90,047.61x = 124,259.52 × 49,761
  4. Step 4: Simplify right side
    90,047.61x = 6,183,277,974.72
  5. Step 5: Solve for x
    x = 6,183,277,974.72/90,047.61
  6. Step 6: Final answer
    x = 68,666.76

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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.