Home / 78,740.91-117,923.19-43,148.70

Finding the Fourth Proportional to 78,740.91, 117,923.19 and 43,148.70

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Solution

The fourth proportional to 78,740.91, 117,923.19 and 43,148.70 is: 64,619.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,740.91 : 117,923.19 = 43,148.70 : x
  2. Step 2: Convert to fraction form
    78,740.91/117,923.19 = 43,148.70/x
  3. Step 3: Cross multiply
    78,740.91x = 117,923.19 × 43,148.70
  4. Step 4: Simplify right side
    78,740.91x = 5,088,232,429.26
  5. Step 5: Solve for x
    x = 5,088,232,429.26/78,740.91
  6. Step 6: Final answer
    x = 64,619.93

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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.