Home / 43,313.60-64,971.40-21,123.92

Finding the Fourth Proportional to 43,313.60, 64,971.40 and 21,123.92

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Solution

The fourth proportional to 43,313.60, 64,971.40 and 21,123.92 is: 31,686.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,313.60 : 64,971.40 = 21,123.92 : x
  2. Step 2: Convert to fraction form
    43,313.60/64,971.40 = 21,123.92/x
  3. Step 3: Cross multiply
    43,313.60x = 64,971.40 × 21,123.92
  4. Step 4: Simplify right side
    43,313.60x = 1,372,450,655.89
  5. Step 5: Solve for x
    x = 1,372,450,655.89/43,313.60
  6. Step 6: Final answer
    x = 31,686.37

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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.