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Finding the Fourth Proportional to 66,572.42, 99,860.67 and 29,113.20

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Solution

The fourth proportional to 66,572.42, 99,860.67 and 29,113.20 is: 43,670.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,572.42 : 99,860.67 = 29,113.20 : x
  2. Step 2: Convert to fraction form
    66,572.42/99,860.67 = 29,113.20/x
  3. Step 3: Cross multiply
    66,572.42x = 99,860.67 × 29,113.20
  4. Step 4: Simplify right side
    66,572.42x = 2,907,263,657.84
  5. Step 5: Solve for x
    x = 2,907,263,657.84/66,572.42
  6. Step 6: Final answer
    x = 43,670.70

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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.