Home / 72,579,862.20-108,869,793.30-21,457,327.80

Finding the Fourth Proportional to 72,579,862.20, 108,869,793.30 and 21,457,327.80

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Solution

The fourth proportional to 72,579,862.20, 108,869,793.30 and 21,457,327.80 is: 32,185,991.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,579,862.20 : 108,869,793.30 = 21,457,327.80 : x
  2. Step 2: Convert to fraction form
    72,579,862.20/108,869,793.30 = 21,457,327.80/x
  3. Step 3: Cross multiply
    72,579,862.20x = 108,869,793.30 × 21,457,327.80
  4. Step 4: Simplify right side
    72,579,862.20x = 2,336,054,842,356,344
  5. Step 5: Solve for x
    x = 2,336,054,842,356,344/72,579,862.20
  6. Step 6: Final answer
    x = 32,185,991.70

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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.