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Finding the Fourth Proportional to 74,622.74, 111,388.13 and 65,765.66

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Solution

The fourth proportional to 74,622.74, 111,388.13 and 65,765.66 is: 98,167.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,622.74 : 111,388.13 = 65,765.66 : x
  2. Step 2: Convert to fraction form
    74,622.74/111,388.13 = 65,765.66/x
  3. Step 3: Cross multiply
    74,622.74x = 111,388.13 × 65,765.66
  4. Step 4: Simplify right side
    74,622.74x = 7,325,513,246.47
  5. Step 5: Solve for x
    x = 7,325,513,246.47/74,622.74
  6. Step 6: Final answer
    x = 98,167.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.