Home / 65,145.12-89,900.60-36,850.20

Finding the Fourth Proportional to 65,145.12, 89,900.60 and 36,850.20

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Solution

The fourth proportional to 65,145.12, 89,900.60 and 36,850.20 is: 50,853.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,145.12 : 89,900.60 = 36,850.20 : x
  2. Step 2: Convert to fraction form
    65,145.12/89,900.60 = 36,850.20/x
  3. Step 3: Cross multiply
    65,145.12x = 89,900.60 × 36,850.20
  4. Step 4: Simplify right side
    65,145.12x = 3,312,854,776.02
  5. Step 5: Solve for x
    x = 3,312,854,776.02/65,145.12
  6. Step 6: Final answer
    x = 50,853.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.