Home / 72,728.89-100,365.24-40,897.11

Finding the Fourth Proportional to 72,728.89, 100,365.24 and 40,897.11

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Solution

The fourth proportional to 72,728.89, 100,365.24 and 40,897.11 is: 56,437.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,728.89 : 100,365.24 = 40,897.11 : x
  2. Step 2: Convert to fraction form
    72,728.89/100,365.24 = 40,897.11/x
  3. Step 3: Cross multiply
    72,728.89x = 100,365.24 × 40,897.11
  4. Step 4: Simplify right side
    72,728.89x = 4,104,648,260.46
  5. Step 5: Solve for x
    x = 4,104,648,260.46/72,728.89
  6. Step 6: Final answer
    x = 56,437.66

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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.