Home / 78,446.07-117,632.15-28,490.94

Finding the Fourth Proportional to 78,446.07, 117,632.15 and 28,490.94

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Solution

The fourth proportional to 78,446.07, 117,632.15 and 28,490.94 is: 42,722.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,446.07 : 117,632.15 = 28,490.94 : x
  2. Step 2: Convert to fraction form
    78,446.07/117,632.15 = 28,490.94/x
  3. Step 3: Cross multiply
    78,446.07x = 117,632.15 × 28,490.94
  4. Step 4: Simplify right side
    78,446.07x = 3,351,450,492.11
  5. Step 5: Solve for x
    x = 3,351,450,492.11/78,446.07
  6. Step 6: Final answer
    x = 42,722.99

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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.