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Finding the Fourth Proportional to 79,208.75, 109,280.75 and 45,192.69

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Solution

The fourth proportional to 79,208.75, 109,280.75 and 45,192.69 is: 62,350.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,208.75 : 109,280.75 = 45,192.69 : x
  2. Step 2: Convert to fraction form
    79,208.75/109,280.75 = 45,192.69/x
  3. Step 3: Cross multiply
    79,208.75x = 109,280.75 × 45,192.69
  4. Step 4: Simplify right side
    79,208.75x = 4,938,690,831.75
  5. Step 5: Solve for x
    x = 4,938,690,831.75/79,208.75
  6. Step 6: Final answer
    x = 62,350.32

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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.