Home / 81,250.12-121,860.24-36,866.20

Finding the Fourth Proportional to 81,250.12, 121,860.24 and 36,866.20

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Solution

The fourth proportional to 81,250.12, 121,860.24 and 36,866.20 is: 55,292.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,250.12 : 121,860.24 = 36,866.20 : x
  2. Step 2: Convert to fraction form
    81,250.12/121,860.24 = 36,866.20/x
  3. Step 3: Cross multiply
    81,250.12x = 121,860.24 × 36,866.20
  4. Step 4: Simplify right side
    81,250.12x = 4,492,523,979.89
  5. Step 5: Solve for x
    x = 4,492,523,979.89/81,250.12
  6. Step 6: Final answer
    x = 55,292.52

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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.