Home / 81,710.32-112,756.44-45,410.08

Finding the Fourth Proportional to 81,710.32, 112,756.44 and 45,410.08

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Solution

The fourth proportional to 81,710.32, 112,756.44 and 45,410.08 is: 62,663.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,710.32 : 112,756.44 = 45,410.08 : x
  2. Step 2: Convert to fraction form
    81,710.32/112,756.44 = 45,410.08/x
  3. Step 3: Cross multiply
    81,710.32x = 112,756.44 × 45,410.08
  4. Step 4: Simplify right side
    81,710.32x = 5,120,278,960.92
  5. Step 5: Solve for x
    x = 5,120,278,960.92/81,710.32
  6. Step 6: Final answer
    x = 62,663.80

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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.