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Finding the Fourth Proportional to 66,612.96, 99,968.72 and 31,552.70

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Solution

The fourth proportional to 66,612.96, 99,968.72 and 31,552.70 is: 47,352.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,612.96 : 99,968.72 = 31,552.70 : x
  2. Step 2: Convert to fraction form
    66,612.96/99,968.72 = 31,552.70/x
  3. Step 3: Cross multiply
    66,612.96x = 99,968.72 × 31,552.70
  4. Step 4: Simplify right side
    66,612.96x = 3,154,282,373.94
  5. Step 5: Solve for x
    x = 3,154,282,373.94/66,612.96
  6. Step 6: Final answer
    x = 47,352.38

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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.