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Finding the Fourth Proportional to 79,138.17, 109,210.66 and 43,328.17

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Solution

The fourth proportional to 79,138.17, 109,210.66 and 43,328.17 is: 59,792.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,138.17 : 109,210.66 = 43,328.17 : x
  2. Step 2: Convert to fraction form
    79,138.17/109,210.66 = 43,328.17/x
  3. Step 3: Cross multiply
    79,138.17x = 109,210.66 × 43,328.17
  4. Step 4: Simplify right side
    79,138.17x = 4,731,898,007.05
  5. Step 5: Solve for x
    x = 4,731,898,007.05/79,138.17
  6. Step 6: Final answer
    x = 59,792.87

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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.