Home / 65,823.08-90,834.18-38,966

Finding the Fourth Proportional to 65,823.08, 90,834.18 and 38,966

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Solution

The fourth proportional to 65,823.08, 90,834.18 and 38,966 is: 53,772.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,823.08 : 90,834.18 = 38,966 : x
  2. Step 2: Convert to fraction form
    65,823.08/90,834.18 = 38,966/x
  3. Step 3: Cross multiply
    65,823.08x = 90,834.18 × 38,966
  4. Step 4: Simplify right side
    65,823.08x = 3,539,444,657.88
  5. Step 5: Solve for x
    x = 3,539,444,657.88/65,823.08
  6. Step 6: Final answer
    x = 53,772.09

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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.