Home / 72,543.02-100,112.49-40,277.64

Finding the Fourth Proportional to 72,543.02, 100,112.49 and 40,277.64

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Solution

The fourth proportional to 72,543.02, 100,112.49 and 40,277.64 is: 55,584.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,543.02 : 100,112.49 = 40,277.64 : x
  2. Step 2: Convert to fraction form
    72,543.02/100,112.49 = 40,277.64/x
  3. Step 3: Cross multiply
    72,543.02x = 100,112.49 × 40,277.64
  4. Step 4: Simplify right side
    72,543.02x = 4,032,294,831.72
  5. Step 5: Solve for x
    x = 4,032,294,831.72/72,543.02
  6. Step 6: Final answer
    x = 55,584.88

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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.