Home / 65,209.05-97,831.80-31,930.20

Finding the Fourth Proportional to 65,209.05, 97,831.80 and 31,930.20

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Solution

The fourth proportional to 65,209.05, 97,831.80 and 31,930.20 is: 47,904.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,209.05 : 97,831.80 = 31,930.20 : x
  2. Step 2: Convert to fraction form
    65,209.05/97,831.80 = 31,930.20/x
  3. Step 3: Cross multiply
    65,209.05x = 97,831.80 × 31,930.20
  4. Step 4: Simplify right side
    65,209.05x = 3,123,788,940.36
  5. Step 5: Solve for x
    x = 3,123,788,940.36/65,209.05
  6. Step 6: Final answer
    x = 47,904.22

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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.