Home / 64,439.20-96,689.28-31,140.48

Finding the Fourth Proportional to 64,439.20, 96,689.28 and 31,140.48

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Solution

The fourth proportional to 64,439.20, 96,689.28 and 31,140.48 is: 46,725.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,439.20 : 96,689.28 = 31,140.48 : x
  2. Step 2: Convert to fraction form
    64,439.20/96,689.28 = 31,140.48/x
  3. Step 3: Cross multiply
    64,439.20x = 96,689.28 × 31,140.48
  4. Step 4: Simplify right side
    64,439.20x = 3,010,950,590.05
  5. Step 5: Solve for x
    x = 3,010,950,590.05/64,439.20
  6. Step 6: Final answer
    x = 46,725.45

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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.