Home / 81,651.63-122,445.96-31,725.16

Finding the Fourth Proportional to 81,651.63, 122,445.96 and 31,725.16

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Solution

The fourth proportional to 81,651.63, 122,445.96 and 31,725.16 is: 47,575.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,651.63 : 122,445.96 = 31,725.16 : x
  2. Step 2: Convert to fraction form
    81,651.63/122,445.96 = 31,725.16/x
  3. Step 3: Cross multiply
    81,651.63x = 122,445.96 × 31,725.16
  4. Step 4: Simplify right side
    81,651.63x = 3,884,617,425.72
  5. Step 5: Solve for x
    x = 3,884,617,425.72/81,651.63
  6. Step 6: Final answer
    x = 47,575.50

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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.