Home / 86,802.10-130,170.13-30,631.75

Finding the Fourth Proportional to 86,802.10, 130,170.13 and 30,631.75

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Solution

The fourth proportional to 86,802.10, 130,170.13 and 30,631.75 is: 45,935.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,802.10 : 130,170.13 = 30,631.75 : x
  2. Step 2: Convert to fraction form
    86,802.10/130,170.13 = 30,631.75/x
  3. Step 3: Cross multiply
    86,802.10x = 130,170.13 × 30,631.75
  4. Step 4: Simplify right side
    86,802.10x = 3,987,338,477.62
  5. Step 5: Solve for x
    x = 3,987,338,477.62/86,802.10
  6. Step 6: Final answer
    x = 45,935.97

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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.