Home / 84,922.50-117,312.96-68,038.86

Finding the Fourth Proportional to 84,922.50, 117,312.96 and 68,038.86

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Solution

The fourth proportional to 84,922.50, 117,312.96 and 68,038.86 is: 93,989.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,922.50 : 117,312.96 = 68,038.86 : x
  2. Step 2: Convert to fraction form
    84,922.50/117,312.96 = 68,038.86/x
  3. Step 3: Cross multiply
    84,922.50x = 117,312.96 × 68,038.86
  4. Step 4: Simplify right side
    84,922.50x = 7,981,840,061.63
  5. Step 5: Solve for x
    x = 7,981,840,061.63/84,922.50
  6. Step 6: Final answer
    x = 93,989.70

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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.