Home / 76,851.20-106,065-45,032.78

Finding the Fourth Proportional to 76,851.20, 106,065 and 45,032.78

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Solution

The fourth proportional to 76,851.20, 106,065 and 45,032.78 is: 62,151.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,851.20 : 106,065 = 45,032.78 : x
  2. Step 2: Convert to fraction form
    76,851.20/106,065 = 45,032.78/x
  3. Step 3: Cross multiply
    76,851.20x = 106,065 × 45,032.78
  4. Step 4: Simplify right side
    76,851.20x = 4,776,401,810.70
  5. Step 5: Solve for x
    x = 4,776,401,810.70/76,851.20
  6. Step 6: Final answer
    x = 62,151.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.