Home / 87,345.47-130,985.98-31,170.56

Finding the Fourth Proportional to 87,345.47, 130,985.98 and 31,170.56

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Solution

The fourth proportional to 87,345.47, 130,985.98 and 31,170.56 is: 46,744.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,345.47 : 130,985.98 = 31,170.56 : x
  2. Step 2: Convert to fraction form
    87,345.47/130,985.98 = 31,170.56/x
  3. Step 3: Cross multiply
    87,345.47x = 130,985.98 × 31,170.56
  4. Step 4: Simplify right side
    87,345.47x = 4,082,905,537.97
  5. Step 5: Solve for x
    x = 4,082,905,537.97/87,345.47
  6. Step 6: Final answer
    x = 46,744.33

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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.