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Finding the Fourth Proportional to 72,950.54, 109,437.47 and 30,831.02

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Solution

The fourth proportional to 72,950.54, 109,437.47 and 30,831.02 is: 46,251.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,950.54 : 109,437.47 = 30,831.02 : x
  2. Step 2: Convert to fraction form
    72,950.54/109,437.47 = 30,831.02/x
  3. Step 3: Cross multiply
    72,950.54x = 109,437.47 × 30,831.02
  4. Step 4: Simplify right side
    72,950.54x = 3,374,068,124.98
  5. Step 5: Solve for x
    x = 3,374,068,124.98/72,950.54
  6. Step 6: Final answer
    x = 46,251.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.