Home / 65,782.06-90,772.24-38,925.70

Finding the Fourth Proportional to 65,782.06, 90,772.24 and 38,925.70

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Solution

The fourth proportional to 65,782.06, 90,772.24 and 38,925.70 is: 53,713.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,782.06 : 90,772.24 = 38,925.70 : x
  2. Step 2: Convert to fraction form
    65,782.06/90,772.24 = 38,925.70/x
  3. Step 3: Cross multiply
    65,782.06x = 90,772.24 × 38,925.70
  4. Step 4: Simplify right side
    65,782.06x = 3,533,372,982.57
  5. Step 5: Solve for x
    x = 3,533,372,982.57/65,782.06
  6. Step 6: Final answer
    x = 53,713.32

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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.