Home / 77,954.10-107,576.60-42,144.12

Finding the Fourth Proportional to 77,954.10, 107,576.60 and 42,144.12

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Solution

The fourth proportional to 77,954.10, 107,576.60 and 42,144.12 is: 58,158.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,954.10 : 107,576.60 = 42,144.12 : x
  2. Step 2: Convert to fraction form
    77,954.10/107,576.60 = 42,144.12/x
  3. Step 3: Cross multiply
    77,954.10x = 107,576.60 × 42,144.12
  4. Step 4: Simplify right side
    77,954.10x = 4,533,721,139.59
  5. Step 5: Solve for x
    x = 4,533,721,139.59/77,954.10
  6. Step 6: Final answer
    x = 58,158.85

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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.