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Finding the Fourth Proportional to 66,338.50, 91,545.82 and 36,124.19

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Solution

The fourth proportional to 66,338.50, 91,545.82 and 36,124.19 is: 49,850.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,338.50 : 91,545.82 = 36,124.19 : x
  2. Step 2: Convert to fraction form
    66,338.50/91,545.82 = 36,124.19/x
  3. Step 3: Cross multiply
    66,338.50x = 91,545.82 × 36,124.19
  4. Step 4: Simplify right side
    66,338.50x = 3,307,018,595.39
  5. Step 5: Solve for x
    x = 3,307,018,595.39/66,338.50
  6. Step 6: Final answer
    x = 49,850.67

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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.