Home / 81,015.60-121,523.40-31,767.60

Finding the Fourth Proportional to 81,015.60, 121,523.40 and 31,767.60

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Solution

The fourth proportional to 81,015.60, 121,523.40 and 31,767.60 is: 47,651.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,015.60 : 121,523.40 = 31,767.60 : x
  2. Step 2: Convert to fraction form
    81,015.60/121,523.40 = 31,767.60/x
  3. Step 3: Cross multiply
    81,015.60x = 121,523.40 × 31,767.60
  4. Step 4: Simplify right side
    81,015.60x = 3,860,506,761.84
  5. Step 5: Solve for x
    x = 3,860,506,761.84/81,015.60
  6. Step 6: Final answer
    x = 47,651.40

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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.