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Finding the Fourth Proportional to 90,733.60, 136,090.80 and 28,400.80

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Solution

The fourth proportional to 90,733.60, 136,090.80 and 28,400.80 is: 42,598.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,733.60 : 136,090.80 = 28,400.80 : x
  2. Step 2: Convert to fraction form
    90,733.60/136,090.80 = 28,400.80/x
  3. Step 3: Cross multiply
    90,733.60x = 136,090.80 × 28,400.80
  4. Step 4: Simplify right side
    90,733.60x = 3,865,087,592.64
  5. Step 5: Solve for x
    x = 3,865,087,592.64/90,733.60
  6. Step 6: Final answer
    x = 42,598.20

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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.