Home / 82,518,163.52-123,781,356.81-31,404,143.84

Finding the Fourth Proportional to 82,518,163.52, 123,781,356.81 and 31,404,143.84

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Solution

The fourth proportional to 82,518,163.52, 123,781,356.81 and 31,404,143.84 is: 47,107,780.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,518,163.52 : 123,781,356.81 = 31,404,143.84 : x
  2. Step 2: Convert to fraction form
    82,518,163.52/123,781,356.81 = 31,404,143.84/x
  3. Step 3: Cross multiply
    82,518,163.52x = 123,781,356.81 × 31,404,143.84
  4. Step 4: Simplify right side
    82,518,163.52x = 3,887,247,533,352,697
  5. Step 5: Solve for x
    x = 3,887,247,533,352,697/82,518,163.52
  6. Step 6: Final answer
    x = 47,107,780.49

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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.