Home / 65,140.54-97,717.89-20,756.86

Finding the Fourth Proportional to 65,140.54, 97,717.89 and 20,756.86

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Solution

The fourth proportional to 65,140.54, 97,717.89 and 20,756.86 is: 31,137.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,140.54 : 97,717.89 = 20,756.86 : x
  2. Step 2: Convert to fraction form
    65,140.54/97,717.89 = 20,756.86/x
  3. Step 3: Cross multiply
    65,140.54x = 97,717.89 × 20,756.86
  4. Step 4: Simplify right side
    65,140.54x = 2,028,316,562.23
  5. Step 5: Solve for x
    x = 2,028,316,562.23/65,140.54
  6. Step 6: Final answer
    x = 31,137.55

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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.