Home / 90,621.76-135,857.80-39,984.74

Finding the Fourth Proportional to 90,621.76, 135,857.80 and 39,984.74

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Solution

The fourth proportional to 90,621.76, 135,857.80 and 39,984.74 is: 59,944.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,621.76 : 135,857.80 = 39,984.74 : x
  2. Step 2: Convert to fraction form
    90,621.76/135,857.80 = 39,984.74/x
  3. Step 3: Cross multiply
    90,621.76x = 135,857.80 × 39,984.74
  4. Step 4: Simplify right side
    90,621.76x = 5,432,238,230.64
  5. Step 5: Solve for x
    x = 5,432,238,230.64/90,621.76
  6. Step 6: Final answer
    x = 59,944.08

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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.