Home / 72,684,137.52-100,305,292.24-39,644,378.16

Finding the Fourth Proportional to 72,684,137.52, 100,305,292.24 and 39,644,378.16

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Solution

The fourth proportional to 72,684,137.52, 100,305,292.24 and 39,644,378.16 is: 54,709,886.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,684,137.52 : 100,305,292.24 = 39,644,378.16 : x
  2. Step 2: Convert to fraction form
    72,684,137.52/100,305,292.24 = 39,644,378.16/x
  3. Step 3: Cross multiply
    72,684,137.52x = 100,305,292.24 × 39,644,378.16
  4. Step 4: Simplify right side
    72,684,137.52x = 3,976,540,937,011,873
  5. Step 5: Solve for x
    x = 3,976,540,937,011,873/72,684,137.52
  6. Step 6: Final answer
    x = 54,709,886.82

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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.