Home / 72,073,320.21-108,128,408.49-20,955,339

Finding the Fourth Proportional to 72,073,320.21, 108,128,408.49 and 20,955,339

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Solution

The fourth proportional to 72,073,320.21, 108,128,408.49 and 20,955,339 is: 31,438,366.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,073,320.21 : 108,128,408.49 = 20,955,339 : x
  2. Step 2: Convert to fraction form
    72,073,320.21/108,128,408.49 = 20,955,339/x
  3. Step 3: Cross multiply
    72,073,320.21x = 108,128,408.49 × 20,955,339
  4. Step 4: Simplify right side
    72,073,320.21x = 2,265,867,455,438,428
  5. Step 5: Solve for x
    x = 2,265,867,455,438,428/72,073,320.21
  6. Step 6: Final answer
    x = 31,438,366.50

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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.