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Finding the Fourth Proportional to 90,830.70, 136,246.05 and 35,426.70

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Solution

The fourth proportional to 90,830.70, 136,246.05 and 35,426.70 is: 53,140.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,830.70 : 136,246.05 = 35,426.70 : x
  2. Step 2: Convert to fraction form
    90,830.70/136,246.05 = 35,426.70/x
  3. Step 3: Cross multiply
    90,830.70x = 136,246.05 × 35,426.70
  4. Step 4: Simplify right side
    90,830.70x = 4,826,747,939.54
  5. Step 5: Solve for x
    x = 4,826,747,939.54/90,830.70
  6. Step 6: Final answer
    x = 53,140.05

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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.