Home / 81,012.08-111,802.07-45,202.86

Finding the Fourth Proportional to 81,012.08, 111,802.07 and 45,202.86

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Solution

The fourth proportional to 81,012.08, 111,802.07 and 45,202.86 is: 62,382.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,012.08 : 111,802.07 = 45,202.86 : x
  2. Step 2: Convert to fraction form
    81,012.08/111,802.07 = 45,202.86/x
  3. Step 3: Cross multiply
    81,012.08x = 111,802.07 × 45,202.86
  4. Step 4: Simplify right side
    81,012.08x = 5,053,773,430.93
  5. Step 5: Solve for x
    x = 5,053,773,430.93/81,012.08
  6. Step 6: Final answer
    x = 62,382.96

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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.