Home / 78,761,507.43-118,141,310.81-20,464,026.92

Finding the Fourth Proportional to 78,761,507.43, 118,141,310.81 and 20,464,026.92

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Solution

The fourth proportional to 78,761,507.43, 118,141,310.81 and 20,464,026.92 is: 30,695,793.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,761,507.43 : 118,141,310.81 = 20,464,026.92 : x
  2. Step 2: Convert to fraction form
    78,761,507.43/118,141,310.81 = 20,464,026.92/x
  3. Step 3: Cross multiply
    78,761,507.43x = 118,141,310.81 × 20,464,026.92
  4. Step 4: Simplify right side
    78,761,507.43x = 2,417,646,965,347,955.50
  5. Step 5: Solve for x
    x = 2,417,646,965,347,955.50/78,761,507.43
  6. Step 6: Final answer
    x = 30,695,793.47

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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.