Home / 90,622.07-135,858.27-39,985.05

Finding the Fourth Proportional to 90,622.07, 135,858.27 and 39,985.05

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Solution

The fourth proportional to 90,622.07, 135,858.27 and 39,985.05 is: 59,944.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,622.07 : 135,858.27 = 39,985.05 : x
  2. Step 2: Convert to fraction form
    90,622.07/135,858.27 = 39,985.05/x
  3. Step 3: Cross multiply
    90,622.07x = 135,858.27 × 39,985.05
  4. Step 4: Simplify right side
    90,622.07x = 5,432,299,389.16
  5. Step 5: Solve for x
    x = 5,432,299,389.16/90,622.07
  6. Step 6: Final answer
    x = 59,944.55

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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.