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Finding the Fourth Proportional to 90,436.80, 135,703.80 and 37,851.60

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Solution

The fourth proportional to 90,436.80, 135,703.80 and 37,851.60 is: 56,797.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,436.80 : 135,703.80 = 37,851.60 : x
  2. Step 2: Convert to fraction form
    90,436.80/135,703.80 = 37,851.60/x
  3. Step 3: Cross multiply
    90,436.80x = 135,703.80 × 37,851.60
  4. Step 4: Simplify right side
    90,436.80x = 5,136,605,956.08
  5. Step 5: Solve for x
    x = 5,136,605,956.08/90,436.80
  6. Step 6: Final answer
    x = 56,797.74

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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.