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Finding the Fourth Proportional to 81,395.48, 112,215.48 and 69,585.68

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Solution

The fourth proportional to 81,395.48, 112,215.48 and 69,585.68 is: 95,933.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,395.48 : 112,215.48 = 69,585.68 : x
  2. Step 2: Convert to fraction form
    81,395.48/112,215.48 = 69,585.68/x
  3. Step 3: Cross multiply
    81,395.48x = 112,215.48 × 69,585.68
  4. Step 4: Simplify right side
    81,395.48x = 7,808,590,482.33
  5. Step 5: Solve for x
    x = 7,808,590,482.33/81,395.48
  6. Step 6: Final answer
    x = 95,933.96

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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.