Home / 64,938.80-97,408.20-57,721.70

Finding the Fourth Proportional to 64,938.80, 97,408.20 and 57,721.70

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Solution

The fourth proportional to 64,938.80, 97,408.20 and 57,721.70 is: 86,582.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,938.80 : 97,408.20 = 57,721.70 : x
  2. Step 2: Convert to fraction form
    64,938.80/97,408.20 = 57,721.70/x
  3. Step 3: Cross multiply
    64,938.80x = 97,408.20 × 57,721.70
  4. Step 4: Simplify right side
    64,938.80x = 5,622,566,897.94
  5. Step 5: Solve for x
    x = 5,622,566,897.94/64,938.80
  6. Step 6: Final answer
    x = 86,582.55

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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.