Home / 75,445.40-113,619.45-68,719.46

Finding the Fourth Proportional to 75,445.40, 113,619.45 and 68,719.46

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Solution

The fourth proportional to 75,445.40, 113,619.45 and 68,719.46 is: 103,490.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,445.40 : 113,619.45 = 68,719.46 : x
  2. Step 2: Convert to fraction form
    75,445.40/113,619.45 = 68,719.46/x
  3. Step 3: Cross multiply
    75,445.40x = 113,619.45 × 68,719.46
  4. Step 4: Simplify right side
    75,445.40x = 7,807,866,905.90
  5. Step 5: Solve for x
    x = 7,807,866,905.90/75,445.40
  6. Step 6: Final answer
    x = 103,490.30

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.