Home / 86,901.30-130,400.55-36,972.90

Finding the Fourth Proportional to 86,901.30, 130,400.55 and 36,972.90

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Solution

The fourth proportional to 86,901.30, 130,400.55 and 36,972.90 is: 55,480.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,901.30 : 130,400.55 = 36,972.90 : x
  2. Step 2: Convert to fraction form
    86,901.30/130,400.55 = 36,972.90/x
  3. Step 3: Cross multiply
    86,901.30x = 130,400.55 × 36,972.90
  4. Step 4: Simplify right side
    86,901.30x = 4,821,286,495.10
  5. Step 5: Solve for x
    x = 4,821,286,495.10/86,901.30
  6. Step 6: Final answer
    x = 55,480.03

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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.