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Finding the Fourth Proportional to 66,225.66, 99,109.32 and 40,914.78

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Solution

The fourth proportional to 66,225.66, 99,109.32 and 40,914.78 is: 61,230.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,225.66 : 99,109.32 = 40,914.78 : x
  2. Step 2: Convert to fraction form
    66,225.66/99,109.32 = 40,914.78/x
  3. Step 3: Cross multiply
    66,225.66x = 99,109.32 × 40,914.78
  4. Step 4: Simplify right side
    66,225.66x = 4,055,036,023.75
  5. Step 5: Solve for x
    x = 4,055,036,023.75/66,225.66
  6. Step 6: Final answer
    x = 61,230.59

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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.