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Finding the Fourth Proportional to 86,976.99, 120,024.69 and 50,681.90

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Solution

The fourth proportional to 86,976.99, 120,024.69 and 50,681.90 is: 69,938.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,976.99 : 120,024.69 = 50,681.90 : x
  2. Step 2: Convert to fraction form
    86,976.99/120,024.69 = 50,681.90/x
  3. Step 3: Cross multiply
    86,976.99x = 120,024.69 × 50,681.90
  4. Step 4: Simplify right side
    86,976.99x = 6,083,079,446.12
  5. Step 5: Solve for x
    x = 6,083,079,446.12/86,976.99
  6. Step 6: Final answer
    x = 69,938.95

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1.5x scale

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.