Home / 66,439.20-99,731.70-36,841.80

Finding the Fourth Proportional to 66,439.20, 99,731.70 and 36,841.80

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Solution

The fourth proportional to 66,439.20, 99,731.70 and 36,841.80 is: 55,303.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,439.20 : 99,731.70 = 36,841.80 : x
  2. Step 2: Convert to fraction form
    66,439.20/99,731.70 = 36,841.80/x
  3. Step 3: Cross multiply
    66,439.20x = 99,731.70 × 36,841.80
  4. Step 4: Simplify right side
    66,439.20x = 3,674,295,345.06
  5. Step 5: Solve for x
    x = 3,674,295,345.06/66,439.20
  6. Step 6: Final answer
    x = 55,303.12

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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.