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Finding the Fourth Proportional to 77,503.20, 115,963.20 and 51,259.20

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Solution

The fourth proportional to 77,503.20, 115,963.20 and 51,259.20 is: 76,695.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,503.20 : 115,963.20 = 51,259.20 : x
  2. Step 2: Convert to fraction form
    77,503.20/115,963.20 = 51,259.20/x
  3. Step 3: Cross multiply
    77,503.20x = 115,963.20 × 51,259.20
  4. Step 4: Simplify right side
    77,503.20x = 5,944,180,861.44
  5. Step 5: Solve for x
    x = 5,944,180,861.44/77,503.20
  6. Step 6: Final answer
    x = 76,695.94

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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.