Home / 61,910.89-92,831.47-19,781.10

Finding the Fourth Proportional to 61,910.89, 92,831.47 and 19,781.10

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Solution

The fourth proportional to 61,910.89, 92,831.47 and 19,781.10 is: 29,660.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,910.89 : 92,831.47 = 19,781.10 : x
  2. Step 2: Convert to fraction form
    61,910.89/92,831.47 = 19,781.10/x
  3. Step 3: Cross multiply
    61,910.89x = 92,831.47 × 19,781.10
  4. Step 4: Simplify right side
    61,910.89x = 1,836,308,541.76
  5. Step 5: Solve for x
    x = 1,836,308,541.76/61,910.89
  6. Step 6: Final answer
    x = 29,660.51

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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.