Home / 78,653,785.25-108,548,685.02-43,378,489.31

Finding the Fourth Proportional to 78,653,785.25, 108,548,685.02 and 43,378,489.31

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Solution

The fourth proportional to 78,653,785.25, 108,548,685.02 and 43,378,489.31 is: 59,865,878.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,653,785.25 : 108,548,685.02 = 43,378,489.31 : x
  2. Step 2: Convert to fraction form
    78,653,785.25/108,548,685.02 = 43,378,489.31/x
  3. Step 3: Cross multiply
    78,653,785.25x = 108,548,685.02 × 43,378,489.31
  4. Step 4: Simplify right side
    78,653,785.25x = 4,708,677,972,320,330
  5. Step 5: Solve for x
    x = 4,708,677,972,320,330/78,653,785.25
  6. Step 6: Final answer
    x = 59,865,878.76

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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.