Home / 74,715.40-112,073.10-57,000.70

Finding the Fourth Proportional to 74,715.40, 112,073.10 and 57,000.70

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Solution

The fourth proportional to 74,715.40, 112,073.10 and 57,000.70 is: 85,501.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,715.40 : 112,073.10 = 57,000.70 : x
  2. Step 2: Convert to fraction form
    74,715.40/112,073.10 = 57,000.70/x
  3. Step 3: Cross multiply
    74,715.40x = 112,073.10 × 57,000.70
  4. Step 4: Simplify right side
    74,715.40x = 6,388,245,151.17
  5. Step 5: Solve for x
    x = 6,388,245,151.17/74,715.40
  6. Step 6: Final answer
    x = 85,501.05

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Half scale
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Similar ratio
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1.5x scale

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.