Home / 90,029.61-135,050.99-30,864.78

Finding the Fourth Proportional to 90,029.61, 135,050.99 and 30,864.78

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Solution

The fourth proportional to 90,029.61, 135,050.99 and 30,864.78 is: 46,299.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,029.61 : 135,050.99 = 30,864.78 : x
  2. Step 2: Convert to fraction form
    90,029.61/135,050.99 = 30,864.78/x
  3. Step 3: Cross multiply
    90,029.61x = 135,050.99 × 30,864.78
  4. Step 4: Simplify right side
    90,029.61x = 4,168,318,940.81
  5. Step 5: Solve for x
    x = 4,168,318,940.81/90,029.61
  6. Step 6: Final answer
    x = 46,299.42

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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.