Home / 81,248.27-112,122.63-45,438.77

Finding the Fourth Proportional to 81,248.27, 112,122.63 and 45,438.77

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Solution

The fourth proportional to 81,248.27, 112,122.63 and 45,438.77 is: 62,705.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,248.27 : 112,122.63 = 45,438.77 : x
  2. Step 2: Convert to fraction form
    81,248.27/112,122.63 = 45,438.77/x
  3. Step 3: Cross multiply
    81,248.27x = 112,122.63 × 45,438.77
  4. Step 4: Simplify right side
    81,248.27x = 5,094,714,676.67
  5. Step 5: Solve for x
    x = 5,094,714,676.67/81,248.27
  6. Step 6: Final answer
    x = 62,705.52

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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.