Home / 76,761.40-114,929.46-39,240.64

Finding the Fourth Proportional to 76,761.40, 114,929.46 and 39,240.64

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Solution

The fourth proportional to 76,761.40, 114,929.46 and 39,240.64 is: 58,752.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,761.40 : 114,929.46 = 39,240.64 : x
  2. Step 2: Convert to fraction form
    76,761.40/114,929.46 = 39,240.64/x
  3. Step 3: Cross multiply
    76,761.40x = 114,929.46 × 39,240.64
  4. Step 4: Simplify right side
    76,761.40x = 4,509,905,565.25
  5. Step 5: Solve for x
    x = 4,509,905,565.25/76,761.40
  6. Step 6: Final answer
    x = 58,752.26

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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.