Home / 57,809.05-86,719.34-15,689.81

Finding the Fourth Proportional to 57,809.05, 86,719.34 and 15,689.81

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Solution

The fourth proportional to 57,809.05, 86,719.34 and 15,689.81 is: 23,536.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,809.05 : 86,719.34 = 15,689.81 : x
  2. Step 2: Convert to fraction form
    57,809.05/86,719.34 = 15,689.81/x
  3. Step 3: Cross multiply
    57,809.05x = 86,719.34 × 15,689.81
  4. Step 4: Simplify right side
    57,809.05x = 1,360,609,967.93
  5. Step 5: Solve for x
    x = 1,360,609,967.93/57,809.05
  6. Step 6: Final answer
    x = 23,536.28

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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.