Home / 77,778.70-116,538.45-73,113.10

Finding the Fourth Proportional to 77,778.70, 116,538.45 and 73,113.10

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Solution

The fourth proportional to 77,778.70, 116,538.45 and 73,113.10 is: 109,547.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,778.70 : 116,538.45 = 73,113.10 : x
  2. Step 2: Convert to fraction form
    77,778.70/116,538.45 = 73,113.10/x
  3. Step 3: Cross multiply
    77,778.70x = 116,538.45 × 73,113.10
  4. Step 4: Simplify right side
    77,778.70x = 8,520,487,348.70
  5. Step 5: Solve for x
    x = 8,520,487,348.70/77,778.70
  6. Step 6: Final answer
    x = 109,547.82

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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.