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Finding the Fourth Proportional to 72,567.93, 100,143.35 and 40,736.82

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Solution

The fourth proportional to 72,567.93, 100,143.35 and 40,736.82 is: 56,216.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,567.93 : 100,143.35 = 40,736.82 : x
  2. Step 2: Convert to fraction form
    72,567.93/100,143.35 = 40,736.82/x
  3. Step 3: Cross multiply
    72,567.93x = 100,143.35 × 40,736.82
  4. Step 4: Simplify right side
    72,567.93x = 4,079,522,176.91
  5. Step 5: Solve for x
    x = 4,079,522,176.91/72,567.93
  6. Step 6: Final answer
    x = 56,216.60

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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.