Home / 61,326.15-91,989.21-19,209.54

Finding the Fourth Proportional to 61,326.15, 91,989.21 and 19,209.54

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Solution

The fourth proportional to 61,326.15, 91,989.21 and 19,209.54 is: 28,814.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,326.15 : 91,989.21 = 19,209.54 : x
  2. Step 2: Convert to fraction form
    61,326.15/91,989.21 = 19,209.54/x
  3. Step 3: Cross multiply
    61,326.15x = 91,989.21 × 19,209.54
  4. Step 4: Simplify right side
    61,326.15x = 1,767,070,409.06
  5. Step 5: Solve for x
    x = 1,767,070,409.06/61,326.15
  6. Step 6: Final answer
    x = 28,814.31

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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.