Home / 72,938.89-100,558.18-54,712.13

Finding the Fourth Proportional to 72,938.89, 100,558.18 and 54,712.13

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Solution

The fourth proportional to 72,938.89, 100,558.18 and 54,712.13 is: 75,429.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,938.89 : 100,558.18 = 54,712.13 : x
  2. Step 2: Convert to fraction form
    72,938.89/100,558.18 = 54,712.13/x
  3. Step 3: Cross multiply
    72,938.89x = 100,558.18 × 54,712.13
  4. Step 4: Simplify right side
    72,938.89x = 5,501,752,536.51
  5. Step 5: Solve for x
    x = 5,501,752,536.51/72,938.89
  6. Step 6: Final answer
    x = 75,429.62

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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.