Home / 81,025.12-121,374.88-40,376.02

Finding the Fourth Proportional to 81,025.12, 121,374.88 and 40,376.02

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Solution

The fourth proportional to 81,025.12, 121,374.88 and 40,376.02 is: 60,482.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,025.12 : 121,374.88 = 40,376.02 : x
  2. Step 2: Convert to fraction form
    81,025.12/121,374.88 = 40,376.02/x
  3. Step 3: Cross multiply
    81,025.12x = 121,374.88 × 40,376.02
  4. Step 4: Simplify right side
    81,025.12x = 4,900,634,582.38
  5. Step 5: Solve for x
    x = 4,900,634,582.38/81,025.12
  6. Step 6: Final answer
    x = 60,482.90

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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.