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Finding the Fourth Proportional to 65,797.52, 90,779.26 and 40,277.32

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Solution

The fourth proportional to 65,797.52, 90,779.26 and 40,277.32 is: 55,569.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,797.52 : 90,779.26 = 40,277.32 : x
  2. Step 2: Convert to fraction form
    65,797.52/90,779.26 = 40,277.32/x
  3. Step 3: Cross multiply
    65,797.52x = 90,779.26 × 40,277.32
  4. Step 4: Simplify right side
    65,797.52x = 3,656,345,304.38
  5. Step 5: Solve for x
    x = 3,656,345,304.38/65,797.52
  6. Step 6: Final answer
    x = 55,569.65

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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.