Home / 61,543-91,831.45-57,781.36

Finding the Fourth Proportional to 61,543, 91,831.45 and 57,781.36

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Solution

The fourth proportional to 61,543, 91,831.45 and 57,781.36 is: 86,218.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,543 : 91,831.45 = 57,781.36 : x
  2. Step 2: Convert to fraction form
    61,543/91,831.45 = 57,781.36/x
  3. Step 3: Cross multiply
    61,543x = 91,831.45 × 57,781.36
  4. Step 4: Simplify right side
    61,543x = 5,306,146,071.77
  5. Step 5: Solve for x
    x = 5,306,146,071.77/61,543
  6. Step 6: Final answer
    x = 86,218.52

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.