Home / 77,981.57-117,024.26-42,451.85

Finding the Fourth Proportional to 77,981.57, 117,024.26 and 42,451.85

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Solution

The fourth proportional to 77,981.57, 117,024.26 and 42,451.85 is: 63,706.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,981.57 : 117,024.26 = 42,451.85 : x
  2. Step 2: Convert to fraction form
    77,981.57/117,024.26 = 42,451.85/x
  3. Step 3: Cross multiply
    77,981.57x = 117,024.26 × 42,451.85
  4. Step 4: Simplify right side
    77,981.57x = 4,967,896,331.88
  5. Step 5: Solve for x
    x = 4,967,896,331.88/77,981.57
  6. Step 6: Final answer
    x = 63,706.03

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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.