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Finding the Fourth Proportional to 90,461.54, 124,820.79 and 54,627.56

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Solution

The fourth proportional to 90,461.54, 124,820.79 and 54,627.56 is: 75,376.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,461.54 : 124,820.79 = 54,627.56 : x
  2. Step 2: Convert to fraction form
    90,461.54/124,820.79 = 54,627.56/x
  3. Step 3: Cross multiply
    90,461.54x = 124,820.79 × 54,627.56
  4. Step 4: Simplify right side
    90,461.54x = 6,818,655,194.97
  5. Step 5: Solve for x
    x = 6,818,655,194.97/90,461.54
  6. Step 6: Final answer
    x = 75,376.29

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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.