Home / 83,631.07-115,408.95-45,390.69

Finding the Fourth Proportional to 83,631.07, 115,408.95 and 45,390.69

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Solution

The fourth proportional to 83,631.07, 115,408.95 and 45,390.69 is: 62,638.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,631.07 : 115,408.95 = 45,390.69 : x
  2. Step 2: Convert to fraction form
    83,631.07/115,408.95 = 45,390.69/x
  3. Step 3: Cross multiply
    83,631.07x = 115,408.95 × 45,390.69
  4. Step 4: Simplify right side
    83,631.07x = 5,238,491,872.68
  5. Step 5: Solve for x
    x = 5,238,491,872.68/83,631.07
  6. Step 6: Final answer
    x = 62,638.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.