Home / 90,830.92-136,237.74-28,490.44

Finding the Fourth Proportional to 90,830.92, 136,237.74 and 28,490.44

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Solution

The fourth proportional to 90,830.92, 136,237.74 and 28,490.44 is: 42,732.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,830.92 : 136,237.74 = 28,490.44 : x
  2. Step 2: Convert to fraction form
    90,830.92/136,237.74 = 28,490.44/x
  3. Step 3: Cross multiply
    90,830.92x = 136,237.74 × 28,490.44
  4. Step 4: Simplify right side
    90,830.92x = 3,881,473,157.21
  5. Step 5: Solve for x
    x = 3,881,473,157.21/90,830.92
  6. Step 6: Final answer
    x = 42,732.95

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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.