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Finding the Fourth Proportional to 77,411.56, 116,169.12 and 28,163.56

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Solution

The fourth proportional to 77,411.56, 116,169.12 and 28,163.56 is: 42,264.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,411.56 : 116,169.12 = 28,163.56 : x
  2. Step 2: Convert to fraction form
    77,411.56/116,169.12 = 28,163.56/x
  3. Step 3: Cross multiply
    77,411.56x = 116,169.12 × 28,163.56
  4. Step 4: Simplify right side
    77,411.56x = 3,271,735,981.27
  5. Step 5: Solve for x
    x = 3,271,735,981.27/77,411.56
  6. Step 6: Final answer
    x = 42,264.18

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1.5x scale

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.