Home / 77,611.28-116,325.79-76,780.22

Finding the Fourth Proportional to 77,611.28, 116,325.79 and 76,780.22

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Solution

The fourth proportional to 77,611.28, 116,325.79 and 76,780.22 is: 115,080.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,611.28 : 116,325.79 = 76,780.22 : x
  2. Step 2: Convert to fraction form
    77,611.28/116,325.79 = 76,780.22/x
  3. Step 3: Cross multiply
    77,611.28x = 116,325.79 × 76,780.22
  4. Step 4: Simplify right side
    77,611.28x = 8,931,518,974.29
  5. Step 5: Solve for x
    x = 8,931,518,974.29/77,611.28
  6. Step 6: Final answer
    x = 115,080.17

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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.