Home / 90,000.45-135,025.23-39,390.27

Finding the Fourth Proportional to 90,000.45, 135,025.23 and 39,390.27

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Solution

The fourth proportional to 90,000.45, 135,025.23 and 39,390.27 is: 59,096.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,000.45 : 135,025.23 = 39,390.27 : x
  2. Step 2: Convert to fraction form
    90,000.45/135,025.23 = 39,390.27/x
  3. Step 3: Cross multiply
    90,000.45x = 135,025.23 × 39,390.27
  4. Step 4: Simplify right side
    90,000.45x = 5,318,680,266.51
  5. Step 5: Solve for x
    x = 5,318,680,266.51/90,000.45
  6. Step 6: Final answer
    x = 59,096.15

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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.