Home / 75,113.40-103,640.94-57,176.76

Finding the Fourth Proportional to 75,113.40, 103,640.94 and 57,176.76

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Solution

The fourth proportional to 75,113.40, 103,640.94 and 57,176.76 is: 78,892.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,113.40 : 103,640.94 = 57,176.76 : x
  2. Step 2: Convert to fraction form
    75,113.40/103,640.94 = 57,176.76/x
  3. Step 3: Cross multiply
    75,113.40x = 103,640.94 × 57,176.76
  4. Step 4: Simplify right side
    75,113.40x = 5,925,853,152.55
  5. Step 5: Solve for x
    x = 5,925,853,152.55/75,113.40
  6. Step 6: Final answer
    x = 78,892.09

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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.