Home / 72,639.39-100,241.73-40,807.59

Finding the Fourth Proportional to 72,639.39, 100,241.73 and 40,807.59

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Solution

The fourth proportional to 72,639.39, 100,241.73 and 40,807.59 is: 56,314.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,639.39 : 100,241.73 = 40,807.59 : x
  2. Step 2: Convert to fraction form
    72,639.39/100,241.73 = 40,807.59/x
  3. Step 3: Cross multiply
    72,639.39x = 100,241.73 × 40,807.59
  4. Step 4: Simplify right side
    72,639.39x = 4,090,623,418.73
  5. Step 5: Solve for x
    x = 4,090,623,418.73/72,639.39
  6. Step 6: Final answer
    x = 56,314.12

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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.