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Finding the Fourth Proportional to 90,547.84, 124,949.94 and 54,757.58

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Solution

The fourth proportional to 90,547.84, 124,949.94 and 54,757.58 is: 75,561.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,547.84 : 124,949.94 = 54,757.58 : x
  2. Step 2: Convert to fraction form
    90,547.84/124,949.94 = 54,757.58/x
  3. Step 3: Cross multiply
    90,547.84x = 124,949.94 × 54,757.58
  4. Step 4: Simplify right side
    90,547.84x = 6,841,956,335.55
  5. Step 5: Solve for x
    x = 6,841,956,335.55/90,547.84
  6. Step 6: Final answer
    x = 75,561.79

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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.