Home / 90,005.55-135,006.66-26,868.51

Finding the Fourth Proportional to 90,005.55, 135,006.66 and 26,868.51

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Solution

The fourth proportional to 90,005.55, 135,006.66 and 26,868.51 is: 40,302.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,005.55 : 135,006.66 = 26,868.51 : x
  2. Step 2: Convert to fraction form
    90,005.55/135,006.66 = 26,868.51/x
  3. Step 3: Cross multiply
    90,005.55x = 135,006.66 × 26,868.51
  4. Step 4: Simplify right side
    90,005.55x = 3,627,427,794.28
  5. Step 5: Solve for x
    x = 3,627,427,794.28/90,005.55
  6. Step 6: Final answer
    x = 40,302.27

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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.