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Finding the Fourth Proportional to 72,901.01, 100,599.82 and 40,639.14

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Solution

The fourth proportional to 72,901.01, 100,599.82 and 40,639.14 is: 56,080.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,901.01 : 100,599.82 = 40,639.14 : x
  2. Step 2: Convert to fraction form
    72,901.01/100,599.82 = 40,639.14/x
  3. Step 3: Cross multiply
    72,901.01x = 100,599.82 × 40,639.14
  4. Step 4: Simplify right side
    72,901.01x = 4,088,290,067.36
  5. Step 5: Solve for x
    x = 4,088,290,067.36/72,901.01
  6. Step 6: Final answer
    x = 56,080.02

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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.