Home / 74,179.12-102,368.61-40,645.12

Finding the Fourth Proportional to 74,179.12, 102,368.61 and 40,645.12

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Solution

The fourth proportional to 74,179.12, 102,368.61 and 40,645.12 is: 56,091.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,179.12 : 102,368.61 = 40,645.12 : x
  2. Step 2: Convert to fraction form
    74,179.12/102,368.61 = 40,645.12/x
  3. Step 3: Cross multiply
    74,179.12x = 102,368.61 × 40,645.12
  4. Step 4: Simplify right side
    74,179.12x = 4,160,784,437.68
  5. Step 5: Solve for x
    x = 4,160,784,437.68/74,179.12
  6. Step 6: Final answer
    x = 56,091.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.