Home / 90,759.68-136,139.44-28,435.04

Finding the Fourth Proportional to 90,759.68, 136,139.44 and 28,435.04

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Solution

The fourth proportional to 90,759.68, 136,139.44 and 28,435.04 is: 42,652.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,759.68 : 136,139.44 = 28,435.04 : x
  2. Step 2: Convert to fraction form
    90,759.68/136,139.44 = 28,435.04/x
  3. Step 3: Cross multiply
    90,759.68x = 136,139.44 × 28,435.04
  4. Step 4: Simplify right side
    90,759.68x = 3,871,130,421.98
  5. Step 5: Solve for x
    x = 3,871,130,421.98/90,759.68
  6. Step 6: Final answer
    x = 42,652.53

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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.