Home / 78,422,660.23-108,222,672.95-43,139,705.86

Finding the Fourth Proportional to 78,422,660.23, 108,222,672.95 and 43,139,705.86

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Solution

The fourth proportional to 78,422,660.23, 108,222,672.95 and 43,139,705.86 is: 59,532,465.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,422,660.23 : 108,222,672.95 = 43,139,705.86 : x
  2. Step 2: Convert to fraction form
    78,422,660.23/108,222,672.95 = 43,139,705.86/x
  3. Step 3: Cross multiply
    78,422,660.23x = 108,222,672.95 × 43,139,705.86
  4. Step 4: Simplify right side
    78,422,660.23x = 4,668,694,277,904,865
  5. Step 5: Solve for x
    x = 4,668,694,277,904,865/78,422,660.23
  6. Step 6: Final answer
    x = 59,532,465.03

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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.