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Finding the Fourth Proportional to 79,326.96, 109,585.08 and 63,390.48

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Solution

The fourth proportional to 79,326.96, 109,585.08 and 63,390.48 is: 87,569.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,326.96 : 109,585.08 = 63,390.48 : x
  2. Step 2: Convert to fraction form
    79,326.96/109,585.08 = 63,390.48/x
  3. Step 3: Cross multiply
    79,326.96x = 109,585.08 × 63,390.48
  4. Step 4: Simplify right side
    79,326.96x = 6,946,650,822.04
  5. Step 5: Solve for x
    x = 6,946,650,822.04/79,326.96
  6. Step 6: Final answer
    x = 87,569.86

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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.