Home / 42,981,561.20-64,472,341.80-21,458,200.70

Finding the Fourth Proportional to 42,981,561.20, 64,472,341.80 and 21,458,200.70

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Solution

The fourth proportional to 42,981,561.20, 64,472,341.80 and 21,458,200.70 is: 32,187,301.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,981,561.20 : 64,472,341.80 = 21,458,200.70 : x
  2. Step 2: Convert to fraction form
    42,981,561.20/64,472,341.80 = 21,458,200.70/x
  3. Step 3: Cross multiply
    42,981,561.20x = 64,472,341.80 × 21,458,200.70
  4. Step 4: Simplify right side
    42,981,561.20x = 1,383,460,449,943,399.25
  5. Step 5: Solve for x
    x = 1,383,460,449,943,399.25/42,981,561.20
  6. Step 6: Final answer
    x = 32,187,301.05

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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.