Home / 65,391.12-90,238.41-36,711.45

Finding the Fourth Proportional to 65,391.12, 90,238.41 and 36,711.45

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Solution

The fourth proportional to 65,391.12, 90,238.41 and 36,711.45 is: 50,661.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,391.12 : 90,238.41 = 36,711.45 : x
  2. Step 2: Convert to fraction form
    65,391.12/90,238.41 = 36,711.45/x
  3. Step 3: Cross multiply
    65,391.12x = 90,238.41 × 36,711.45
  4. Step 4: Simplify right side
    65,391.12x = 3,312,782,876.79
  5. Step 5: Solve for x
    x = 3,312,782,876.79/65,391.12
  6. Step 6: Final answer
    x = 50,661.05

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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.