Home / 81,710.64-112,732.38-45,895.68

Finding the Fourth Proportional to 81,710.64, 112,732.38 and 45,895.68

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Solution

The fourth proportional to 81,710.64, 112,732.38 and 45,895.68 is: 63,320.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,710.64 : 112,732.38 = 45,895.68 : x
  2. Step 2: Convert to fraction form
    81,710.64/112,732.38 = 45,895.68/x
  3. Step 3: Cross multiply
    81,710.64x = 112,732.38 × 45,895.68
  4. Step 4: Simplify right side
    81,710.64x = 5,173,929,238.12
  5. Step 5: Solve for x
    x = 5,173,929,238.12/81,710.64
  6. Step 6: Final answer
    x = 63,320.14

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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.