Home / 76,673.28-105,807.60-43,139.04

Finding the Fourth Proportional to 76,673.28, 105,807.60 and 43,139.04

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Solution

The fourth proportional to 76,673.28, 105,807.60 and 43,139.04 is: 59,531.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,673.28 : 105,807.60 = 43,139.04 : x
  2. Step 2: Convert to fraction form
    76,673.28/105,807.60 = 43,139.04/x
  3. Step 3: Cross multiply
    76,673.28x = 105,807.60 × 43,139.04
  4. Step 4: Simplify right side
    76,673.28x = 4,564,438,288.70
  5. Step 5: Solve for x
    x = 4,564,438,288.70/76,673.28
  6. Step 6: Final answer
    x = 59,531.02

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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.