Home / 77,945.12-107,538-44,387.36

Finding the Fourth Proportional to 77,945.12, 107,538 and 44,387.36

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Solution

The fourth proportional to 77,945.12, 107,538 and 44,387.36 is: 61,239.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,945.12 : 107,538 = 44,387.36 : x
  2. Step 2: Convert to fraction form
    77,945.12/107,538 = 44,387.36/x
  3. Step 3: Cross multiply
    77,945.12x = 107,538 × 44,387.36
  4. Step 4: Simplify right side
    77,945.12x = 4,773,327,919.68
  5. Step 5: Solve for x
    x = 4,773,327,919.68/77,945.12
  6. Step 6: Final answer
    x = 61,239.60

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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.