Home / 42,747.17-64,115.28-17,782.56

Finding the Fourth Proportional to 42,747.17, 64,115.28 and 17,782.56

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Solution

The fourth proportional to 42,747.17, 64,115.28 and 17,782.56 is: 26,671.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,747.17 : 64,115.28 = 17,782.56 : x
  2. Step 2: Convert to fraction form
    42,747.17/64,115.28 = 17,782.56/x
  3. Step 3: Cross multiply
    42,747.17x = 64,115.28 × 17,782.56
  4. Step 4: Simplify right side
    42,747.17x = 1,140,133,813.52
  5. Step 5: Solve for x
    x = 1,140,133,813.52/42,747.17
  6. Step 6: Final answer
    x = 26,671.57

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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.