Home / 82,511.12-123,746.86-38,095.20

Finding the Fourth Proportional to 82,511.12, 123,746.86 and 38,095.20

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Solution

The fourth proportional to 82,511.12, 123,746.86 and 38,095.20 is: 57,133.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,511.12 : 123,746.86 = 38,095.20 : x
  2. Step 2: Convert to fraction form
    82,511.12/123,746.86 = 38,095.20/x
  3. Step 3: Cross multiply
    82,511.12x = 123,746.86 × 38,095.20
  4. Step 4: Simplify right side
    82,511.12x = 4,714,161,381.07
  5. Step 5: Solve for x
    x = 4,714,161,381.07/82,511.12
  6. Step 6: Final answer
    x = 57,133.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.