Home / 81,515.64-122,291.87-28,925.13

Finding the Fourth Proportional to 81,515.64, 122,291.87 and 28,925.13

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Solution

The fourth proportional to 81,515.64, 122,291.87 and 28,925.13 is: 43,394.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,515.64 : 122,291.87 = 28,925.13 : x
  2. Step 2: Convert to fraction form
    81,515.64/122,291.87 = 28,925.13/x
  3. Step 3: Cross multiply
    81,515.64x = 122,291.87 × 28,925.13
  4. Step 4: Simplify right side
    81,515.64x = 3,537,308,093.07
  5. Step 5: Solve for x
    x = 3,537,308,093.07/81,515.64
  6. Step 6: Final answer
    x = 43,394.23

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1.5x scale

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.