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Finding the Fourth Proportional to 77,500.70, 115,959.45 and 51,256.70

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Solution

The fourth proportional to 77,500.70, 115,959.45 and 51,256.70 is: 76,692.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,500.70 : 115,959.45 = 51,256.70 : x
  2. Step 2: Convert to fraction form
    77,500.70/115,959.45 = 51,256.70/x
  3. Step 3: Cross multiply
    77,500.70x = 115,959.45 × 51,256.70
  4. Step 4: Simplify right side
    77,500.70x = 5,943,698,740.82
  5. Step 5: Solve for x
    x = 5,943,698,740.82/77,500.70
  6. Step 6: Final answer
    x = 76,692.19

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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.