Home / 76,013.28-104,893.56-42,020.88

Finding the Fourth Proportional to 76,013.28, 104,893.56 and 42,020.88

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Solution

The fourth proportional to 76,013.28, 104,893.56 and 42,020.88 is: 57,986.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,013.28 : 104,893.56 = 42,020.88 : x
  2. Step 2: Convert to fraction form
    76,013.28/104,893.56 = 42,020.88/x
  3. Step 3: Cross multiply
    76,013.28x = 104,893.56 × 42,020.88
  4. Step 4: Simplify right side
    76,013.28x = 4,407,719,697.53
  5. Step 5: Solve for x
    x = 4,407,719,697.53/76,013.28
  6. Step 6: Final answer
    x = 57,986.18

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1.5x scale

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.