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Finding the Fourth Proportional to 78,816.95, 108,738.98 and 60,673.22

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Solution

The fourth proportional to 78,816.95, 108,738.98 and 60,673.22 is: 83,707.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,816.95 : 108,738.98 = 60,673.22 : x
  2. Step 2: Convert to fraction form
    78,816.95/108,738.98 = 60,673.22/x
  3. Step 3: Cross multiply
    78,816.95x = 108,738.98 × 60,673.22
  4. Step 4: Simplify right side
    78,816.95x = 6,597,544,024.60
  5. Step 5: Solve for x
    x = 6,597,544,024.60/78,816.95
  6. Step 6: Final answer
    x = 83,707.17

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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.