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Finding the Fourth Proportional to 81,670.68, 112,695.30 and 45,860.58

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Solution

The fourth proportional to 81,670.68, 112,695.30 and 45,860.58 is: 63,281.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,670.68 : 112,695.30 = 45,860.58 : x
  2. Step 2: Convert to fraction form
    81,670.68/112,695.30 = 45,860.58/x
  3. Step 3: Cross multiply
    81,670.68x = 112,695.30 × 45,860.58
  4. Step 4: Simplify right side
    81,670.68x = 5,168,271,821.27
  5. Step 5: Solve for x
    x = 5,168,271,821.27/81,670.68
  6. Step 6: Final answer
    x = 63,281.85

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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.