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Finding the Fourth Proportional to 51,969.55, 77,983.56 and 28,278.82

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Solution

The fourth proportional to 51,969.55, 77,983.56 and 28,278.82 is: 42,434.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,969.55 : 77,983.56 = 28,278.82 : x
  2. Step 2: Convert to fraction form
    51,969.55/77,983.56 = 28,278.82/x
  3. Step 3: Cross multiply
    51,969.55x = 77,983.56 × 28,278.82
  4. Step 4: Simplify right side
    51,969.55x = 2,205,283,153.68
  5. Step 5: Solve for x
    x = 2,205,283,153.68/51,969.55
  6. Step 6: Final answer
    x = 42,434.14

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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.