Home / 89,678.13-123,744.98-51,435.70

Finding the Fourth Proportional to 89,678.13, 123,744.98 and 51,435.70

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Solution

The fourth proportional to 89,678.13, 123,744.98 and 51,435.70 is: 70,975.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,678.13 : 123,744.98 = 51,435.70 : x
  2. Step 2: Convert to fraction form
    89,678.13/123,744.98 = 51,435.70/x
  3. Step 3: Cross multiply
    89,678.13x = 123,744.98 × 51,435.70
  4. Step 4: Simplify right side
    89,678.13x = 6,364,909,229.83
  5. Step 5: Solve for x
    x = 6,364,909,229.83/89,678.13
  6. Step 6: Final answer
    x = 70,975.05

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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.