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Finding the Fourth Proportional to 65,782.80, 90,775.60 and 37,103.52

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Solution

The fourth proportional to 65,782.80, 90,775.60 and 37,103.52 is: 51,200.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,782.80 : 90,775.60 = 37,103.52 : x
  2. Step 2: Convert to fraction form
    65,782.80/90,775.60 = 37,103.52/x
  3. Step 3: Cross multiply
    65,782.80x = 90,775.60 × 37,103.52
  4. Step 4: Simplify right side
    65,782.80x = 3,368,094,290.11
  5. Step 5: Solve for x
    x = 3,368,094,290.11/65,782.80
  6. Step 6: Final answer
    x = 51,200.23

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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.