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Finding the Fourth Proportional to 72,381.46, 99,886.08 and 40,550.62

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Solution

The fourth proportional to 72,381.46, 99,886.08 and 40,550.62 is: 55,959.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,381.46 : 99,886.08 = 40,550.62 : x
  2. Step 2: Convert to fraction form
    72,381.46/99,886.08 = 40,550.62/x
  3. Step 3: Cross multiply
    72,381.46x = 99,886.08 × 40,550.62
  4. Step 4: Simplify right side
    72,381.46x = 4,050,442,473.37
  5. Step 5: Solve for x
    x = 4,050,442,473.37/72,381.46
  6. Step 6: Final answer
    x = 55,959.67

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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.