Home / 66,467.20-99,854.40-45,731.20

Finding the Fourth Proportional to 66,467.20, 99,854.40 and 45,731.20

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Solution

The fourth proportional to 66,467.20, 99,854.40 and 45,731.20 is: 68,702.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,467.20 : 99,854.40 = 45,731.20 : x
  2. Step 2: Convert to fraction form
    66,467.20/99,854.40 = 45,731.20/x
  3. Step 3: Cross multiply
    66,467.20x = 99,854.40 × 45,731.20
  4. Step 4: Simplify right side
    66,467.20x = 4,566,461,537.28
  5. Step 5: Solve for x
    x = 4,566,461,537.28/66,467.20
  6. Step 6: Final answer
    x = 68,702.48

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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.