Home / 77,631.10-107,142.24-43,642.39

Finding the Fourth Proportional to 77,631.10, 107,142.24 and 43,642.39

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Solution

The fourth proportional to 77,631.10, 107,142.24 and 43,642.39 is: 60,232.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,631.10 : 107,142.24 = 43,642.39 : x
  2. Step 2: Convert to fraction form
    77,631.10/107,142.24 = 43,642.39/x
  3. Step 3: Cross multiply
    77,631.10x = 107,142.24 × 43,642.39
  4. Step 4: Simplify right side
    77,631.10x = 4,675,943,423.55
  5. Step 5: Solve for x
    x = 4,675,943,423.55/77,631.10
  6. Step 6: Final answer
    x = 60,232.86

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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.