Home / 90,337.08-135,518.06-30,370.21

Finding the Fourth Proportional to 90,337.08, 135,518.06 and 30,370.21

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Solution

The fourth proportional to 90,337.08, 135,518.06 and 30,370.21 is: 45,559.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,337.08 : 135,518.06 = 30,370.21 : x
  2. Step 2: Convert to fraction form
    90,337.08/135,518.06 = 30,370.21/x
  3. Step 3: Cross multiply
    90,337.08x = 135,518.06 × 30,370.21
  4. Step 4: Simplify right side
    90,337.08x = 4,115,711,678.12
  5. Step 5: Solve for x
    x = 4,115,711,678.12/90,337.08
  6. Step 6: Final answer
    x = 45,559.49

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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.