Home / 77,790.89-107,352.80-45,959.72

Finding the Fourth Proportional to 77,790.89, 107,352.80 and 45,959.72

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Solution

The fourth proportional to 77,790.89, 107,352.80 and 45,959.72 is: 63,425.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,790.89 : 107,352.80 = 45,959.72 : x
  2. Step 2: Convert to fraction form
    77,790.89/107,352.80 = 45,959.72/x
  3. Step 3: Cross multiply
    77,790.89x = 107,352.80 × 45,959.72
  4. Step 4: Simplify right side
    77,790.89x = 4,933,903,862.65
  5. Step 5: Solve for x
    x = 4,933,903,862.65/77,790.89
  6. Step 6: Final answer
    x = 63,425.22

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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.