Home / 72,579,145.20-108,868,717.80-36,299,439.60

Finding the Fourth Proportional to 72,579,145.20, 108,868,717.80 and 36,299,439.60

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Solution

The fourth proportional to 72,579,145.20, 108,868,717.80 and 36,299,439.60 is: 54,449,159.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,579,145.20 : 108,868,717.80 = 36,299,439.60 : x
  2. Step 2: Convert to fraction form
    72,579,145.20/108,868,717.80 = 36,299,439.60/x
  3. Step 3: Cross multiply
    72,579,145.20x = 108,868,717.80 × 36,299,439.60
  4. Step 4: Simplify right side
    72,579,145.20x = 3,951,873,446,110,545
  5. Step 5: Solve for x
    x = 3,951,873,446,110,545/72,579,145.20
  6. Step 6: Final answer
    x = 54,449,159.40

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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.