Home / 90,817.05-136,247.45-28,487.55

Finding the Fourth Proportional to 90,817.05, 136,247.45 and 28,487.55

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Solution

The fourth proportional to 90,817.05, 136,247.45 and 28,487.55 is: 42,738.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,817.05 : 136,247.45 = 28,487.55 : x
  2. Step 2: Convert to fraction form
    90,817.05/136,247.45 = 28,487.55/x
  3. Step 3: Cross multiply
    90,817.05x = 136,247.45 × 28,487.55
  4. Step 4: Simplify right side
    90,817.05x = 3,881,355,901.81
  5. Step 5: Solve for x
    x = 3,881,355,901.81/90,817.05
  6. Step 6: Final answer
    x = 42,738.19

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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.