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Finding the Fourth Proportional to 89,995.39, 134,866.59 and 40,015.15

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Solution

The fourth proportional to 89,995.39, 134,866.59 and 40,015.15 is: 59,966.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,995.39 : 134,866.59 = 40,015.15 : x
  2. Step 2: Convert to fraction form
    89,995.39/134,866.59 = 40,015.15/x
  3. Step 3: Cross multiply
    89,995.39x = 134,866.59 × 40,015.15
  4. Step 4: Simplify right side
    89,995.39x = 5,396,706,828.84
  5. Step 5: Solve for x
    x = 5,396,706,828.84/89,995.39
  6. Step 6: Final answer
    x = 59,966.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.