Home / 72,042,743.20-99,417,992.88-39,447,695.20

Finding the Fourth Proportional to 72,042,743.20, 99,417,992.88 and 39,447,695.20

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Solution

The fourth proportional to 72,042,743.20, 99,417,992.88 and 39,447,695.20 is: 54,437,275.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,042,743.20 : 99,417,992.88 = 39,447,695.20 : x
  2. Step 2: Convert to fraction form
    72,042,743.20/99,417,992.88 = 39,447,695.20/x
  3. Step 3: Cross multiply
    72,042,743.20x = 99,417,992.88 × 39,447,695.20
  4. Step 4: Simplify right side
    72,042,743.20x = 3,921,810,680,526,010.50
  5. Step 5: Solve for x
    x = 3,921,810,680,526,010.50/72,042,743.20
  6. Step 6: Final answer
    x = 54,437,275.79

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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.