Home / 78,338.35-117,507.53-48,740.95

Finding the Fourth Proportional to 78,338.35, 117,507.53 and 48,740.95

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Solution

The fourth proportional to 78,338.35, 117,507.53 and 48,740.95 is: 73,111.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,338.35 : 117,507.53 = 48,740.95 : x
  2. Step 2: Convert to fraction form
    78,338.35/117,507.53 = 48,740.95/x
  3. Step 3: Cross multiply
    78,338.35x = 117,507.53 × 48,740.95
  4. Step 4: Simplify right side
    78,338.35x = 5,727,428,400.65
  5. Step 5: Solve for x
    x = 5,727,428,400.65/78,338.35
  6. Step 6: Final answer
    x = 73,111.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.