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Finding the Fourth Proportional to 72,504, 100,055.79 and 42,310.17

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Solution

The fourth proportional to 72,504, 100,055.79 and 42,310.17 is: 58,388.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,504 : 100,055.79 = 42,310.17 : x
  2. Step 2: Convert to fraction form
    72,504/100,055.79 = 42,310.17/x
  3. Step 3: Cross multiply
    72,504x = 100,055.79 × 42,310.17
  4. Step 4: Simplify right side
    72,504x = 4,233,377,484.38
  5. Step 5: Solve for x
    x = 4,233,377,484.38/72,504
  6. Step 6: Final answer
    x = 58,388.19

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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.