Home / 77,947.93-107,542.65-47,701.72

Finding the Fourth Proportional to 77,947.93, 107,542.65 and 47,701.72

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Solution

The fourth proportional to 77,947.93, 107,542.65 and 47,701.72 is: 65,812.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,947.93 : 107,542.65 = 47,701.72 : x
  2. Step 2: Convert to fraction form
    77,947.93/107,542.65 = 47,701.72/x
  3. Step 3: Cross multiply
    77,947.93x = 107,542.65 × 47,701.72
  4. Step 4: Simplify right side
    77,947.93x = 5,129,969,378.36
  5. Step 5: Solve for x
    x = 5,129,969,378.36/77,947.93
  6. Step 6: Final answer
    x = 65,812.77

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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.