Home / 65,803.12-90,766.46-43,143.57

Finding the Fourth Proportional to 65,803.12, 90,766.46 and 43,143.57

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Solution

The fourth proportional to 65,803.12, 90,766.46 and 43,143.57 is: 59,510.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,803.12 : 90,766.46 = 43,143.57 : x
  2. Step 2: Convert to fraction form
    65,803.12/90,766.46 = 43,143.57/x
  3. Step 3: Cross multiply
    65,803.12x = 90,766.46 × 43,143.57
  4. Step 4: Simplify right side
    65,803.12x = 3,915,989,228.52
  5. Step 5: Solve for x
    x = 3,915,989,228.52/65,803.12
  6. Step 6: Final answer
    x = 59,510.69

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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.