Home / 76,898.10-115,306.02-39,442.86

Finding the Fourth Proportional to 76,898.10, 115,306.02 and 39,442.86

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Solution

The fourth proportional to 76,898.10, 115,306.02 and 39,442.86 is: 59,143.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,898.10 : 115,306.02 = 39,442.86 : x
  2. Step 2: Convert to fraction form
    76,898.10/115,306.02 = 39,442.86/x
  3. Step 3: Cross multiply
    76,898.10x = 115,306.02 × 39,442.86
  4. Step 4: Simplify right side
    76,898.10x = 4,547,999,204.02
  5. Step 5: Solve for x
    x = 4,547,999,204.02/76,898.10
  6. Step 6: Final answer
    x = 59,143.19

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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.