Home / 74,187.12-102,378.24-40,653.12

Finding the Fourth Proportional to 74,187.12, 102,378.24 and 40,653.12

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Solution

The fourth proportional to 74,187.12, 102,378.24 and 40,653.12 is: 56,101.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,187.12 : 102,378.24 = 40,653.12 : x
  2. Step 2: Convert to fraction form
    74,187.12/102,378.24 = 40,653.12/x
  3. Step 3: Cross multiply
    74,187.12x = 102,378.24 × 40,653.12
  4. Step 4: Simplify right side
    74,187.12x = 4,161,994,876.11
  5. Step 5: Solve for x
    x = 4,161,994,876.11/74,187.12
  6. Step 6: Final answer
    x = 56,101.31

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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.