Home / 97,661.20-146,503.36-31,078

Finding the Fourth Proportional to 97,661.20, 146,503.36 and 31,078

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Solution

The fourth proportional to 97,661.20, 146,503.36 and 31,078 is: 46,620.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,661.20 : 146,503.36 = 31,078 : x
  2. Step 2: Convert to fraction form
    97,661.20/146,503.36 = 31,078/x
  3. Step 3: Cross multiply
    97,661.20x = 146,503.36 × 31,078
  4. Step 4: Simplify right side
    97,661.20x = 4,553,031,422.08
  5. Step 5: Solve for x
    x = 4,553,031,422.08/97,661.20
  6. Step 6: Final answer
    x = 46,620.68

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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.