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Finding the Fourth Proportional to 66,334.83, 99,502.98 and 28,378.93

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Solution

The fourth proportional to 66,334.83, 99,502.98 and 28,378.93 is: 42,568.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,334.83 : 99,502.98 = 28,378.93 : x
  2. Step 2: Convert to fraction form
    66,334.83/99,502.98 = 28,378.93/x
  3. Step 3: Cross multiply
    66,334.83x = 99,502.98 × 28,378.93
  4. Step 4: Simplify right side
    66,334.83x = 2,823,788,104.21
  5. Step 5: Solve for x
    x = 2,823,788,104.21/66,334.83
  6. Step 6: Final answer
    x = 42,568.71

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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.