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Finding the Fourth Proportional to 76,963.62, 115,291.80 and 50,588.40

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Solution

The fourth proportional to 76,963.62, 115,291.80 and 50,588.40 is: 75,781.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,963.62 : 115,291.80 = 50,588.40 : x
  2. Step 2: Convert to fraction form
    76,963.62/115,291.80 = 50,588.40/x
  3. Step 3: Cross multiply
    76,963.62x = 115,291.80 × 50,588.40
  4. Step 4: Simplify right side
    76,963.62x = 5,832,427,695.12
  5. Step 5: Solve for x
    x = 5,832,427,695.12/76,963.62
  6. Step 6: Final answer
    x = 75,781.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.