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Finding the Fourth Proportional to 63,689.72, 87,891.18 and 35,394.84

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Solution

The fourth proportional to 63,689.72, 87,891.18 and 35,394.84 is: 48,844.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,689.72 : 87,891.18 = 35,394.84 : x
  2. Step 2: Convert to fraction form
    63,689.72/87,891.18 = 35,394.84/x
  3. Step 3: Cross multiply
    63,689.72x = 87,891.18 × 35,394.84
  4. Step 4: Simplify right side
    63,689.72x = 3,110,894,253.51
  5. Step 5: Solve for x
    x = 3,110,894,253.51/63,689.72
  6. Step 6: Final answer
    x = 48,844.53

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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.