Home / 72,957.06-109,355.40-28,575.54

Finding the Fourth Proportional to 72,957.06, 109,355.40 and 28,575.54

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Solution

The fourth proportional to 72,957.06, 109,355.40 and 28,575.54 is: 42,831.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,957.06 : 109,355.40 = 28,575.54 : x
  2. Step 2: Convert to fraction form
    72,957.06/109,355.40 = 28,575.54/x
  3. Step 3: Cross multiply
    72,957.06x = 109,355.40 × 28,575.54
  4. Step 4: Simplify right side
    72,957.06x = 3,124,889,606.92
  5. Step 5: Solve for x
    x = 3,124,889,606.92/72,957.06
  6. Step 6: Final answer
    x = 42,831.90

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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.