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Finding the Fourth Proportional to 72,696.80, 100,232.16 and 59,218.40

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Solution

The fourth proportional to 72,696.80, 100,232.16 and 59,218.40 is: 81,648.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,696.80 : 100,232.16 = 59,218.40 : x
  2. Step 2: Convert to fraction form
    72,696.80/100,232.16 = 59,218.40/x
  3. Step 3: Cross multiply
    72,696.80x = 100,232.16 × 59,218.40
  4. Step 4: Simplify right side
    72,696.80x = 5,935,588,143.74
  5. Step 5: Solve for x
    x = 5,935,588,143.74/72,696.80
  6. Step 6: Final answer
    x = 81,648.55

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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.