Home / 89,447.39-123,438.84-51,206.78

Finding the Fourth Proportional to 89,447.39, 123,438.84 and 51,206.78

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Solution

The fourth proportional to 89,447.39, 123,438.84 and 51,206.78 is: 70,666.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,447.39 : 123,438.84 = 51,206.78 : x
  2. Step 2: Convert to fraction form
    89,447.39/123,438.84 = 51,206.78/x
  3. Step 3: Cross multiply
    89,447.39x = 123,438.84 × 51,206.78
  4. Step 4: Simplify right side
    89,447.39x = 6,320,905,639.91
  5. Step 5: Solve for x
    x = 6,320,905,639.91/89,447.39
  6. Step 6: Final answer
    x = 70,666.18

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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.