Home / 81,115.62-111,928.48-45,301.06

Finding the Fourth Proportional to 81,115.62, 111,928.48 and 45,301.06

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Solution

The fourth proportional to 81,115.62, 111,928.48 and 45,301.06 is: 62,509.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,115.62 : 111,928.48 = 45,301.06 : x
  2. Step 2: Convert to fraction form
    81,115.62/111,928.48 = 45,301.06/x
  3. Step 3: Cross multiply
    81,115.62x = 111,928.48 × 45,301.06
  4. Step 4: Simplify right side
    81,115.62x = 5,070,478,788.19
  5. Step 5: Solve for x
    x = 5,070,478,788.19/81,115.62
  6. Step 6: Final answer
    x = 62,509.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.