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Finding the Fourth Proportional to 52,015.70, 77,891.55 and 28,615.70

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Solution

The fourth proportional to 52,015.70, 77,891.55 and 28,615.70 is: 42,850.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,015.70 : 77,891.55 = 28,615.70 : x
  2. Step 2: Convert to fraction form
    52,015.70/77,891.55 = 28,615.70/x
  3. Step 3: Cross multiply
    52,015.70x = 77,891.55 × 28,615.70
  4. Step 4: Simplify right side
    52,015.70x = 2,228,921,227.34
  5. Step 5: Solve for x
    x = 2,228,921,227.34/52,015.70
  6. Step 6: Final answer
    x = 42,850.93

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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.