Home / 78,280.20-107,953.08-52,790.71

Finding the Fourth Proportional to 78,280.20, 107,953.08 and 52,790.71

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Solution

The fourth proportional to 78,280.20, 107,953.08 and 52,790.71 is: 72,801.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,280.20 : 107,953.08 = 52,790.71 : x
  2. Step 2: Convert to fraction form
    78,280.20/107,953.08 = 52,790.71/x
  3. Step 3: Cross multiply
    78,280.20x = 107,953.08 × 52,790.71
  4. Step 4: Simplify right side
    78,280.20x = 5,698,919,739.89
  5. Step 5: Solve for x
    x = 5,698,919,739.89/78,280.20
  6. Step 6: Final answer
    x = 72,801.55

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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.