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Finding the Fourth Proportional to 90,319.89, 135,479.85 and 37,700.67

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Solution

The fourth proportional to 90,319.89, 135,479.85 and 37,700.67 is: 56,551.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,319.89 : 135,479.85 = 37,700.67 : x
  2. Step 2: Convert to fraction form
    90,319.89/135,479.85 = 37,700.67/x
  3. Step 3: Cross multiply
    90,319.89x = 135,479.85 × 37,700.67
  4. Step 4: Simplify right side
    90,319.89x = 5,107,681,116.50
  5. Step 5: Solve for x
    x = 5,107,681,116.50/90,319.89
  6. Step 6: Final answer
    x = 56,551.01

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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.