Home / 90,815.82-136,235.63-30,005.89

Finding the Fourth Proportional to 90,815.82, 136,235.63 and 30,005.89

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Solution

The fourth proportional to 90,815.82, 136,235.63 and 30,005.89 is: 45,012.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,815.82 : 136,235.63 = 30,005.89 : x
  2. Step 2: Convert to fraction form
    90,815.82/136,235.63 = 30,005.89/x
  3. Step 3: Cross multiply
    90,815.82x = 136,235.63 × 30,005.89
  4. Step 4: Simplify right side
    90,815.82x = 4,087,871,327.86
  5. Step 5: Solve for x
    x = 4,087,871,327.86/90,815.82
  6. Step 6: Final answer
    x = 45,012.77

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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.