Home / 61,015.47-91,550.13-21,040.55

Finding the Fourth Proportional to 61,015.47, 91,550.13 and 21,040.55

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Solution

The fourth proportional to 61,015.47, 91,550.13 and 21,040.55 is: 31,570.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,015.47 : 91,550.13 = 21,040.55 : x
  2. Step 2: Convert to fraction form
    61,015.47/91,550.13 = 21,040.55/x
  3. Step 3: Cross multiply
    61,015.47x = 91,550.13 × 21,040.55
  4. Step 4: Simplify right side
    61,015.47x = 1,926,265,087.77
  5. Step 5: Solve for x
    x = 1,926,265,087.77/61,015.47
  6. Step 6: Final answer
    x = 31,570.11

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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.