Home / 81,455.85-112,502.39-64,892.97

Finding the Fourth Proportional to 81,455.85, 112,502.39 and 64,892.97

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Solution

The fourth proportional to 81,455.85, 112,502.39 and 64,892.97 is: 89,626.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,455.85 : 112,502.39 = 64,892.97 : x
  2. Step 2: Convert to fraction form
    81,455.85/112,502.39 = 64,892.97/x
  3. Step 3: Cross multiply
    81,455.85x = 112,502.39 × 64,892.97
  4. Step 4: Simplify right side
    81,455.85x = 7,300,613,894.73
  5. Step 5: Solve for x
    x = 7,300,613,894.73/81,455.85
  6. Step 6: Final answer
    x = 89,626.64

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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.