Home / 74,208.80-102,408.50-40,217.36

Finding the Fourth Proportional to 74,208.80, 102,408.50 and 40,217.36

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Solution

The fourth proportional to 74,208.80, 102,408.50 and 40,217.36 is: 55,500.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,208.80 : 102,408.50 = 40,217.36 : x
  2. Step 2: Convert to fraction form
    74,208.80/102,408.50 = 40,217.36/x
  3. Step 3: Cross multiply
    74,208.80x = 102,408.50 × 40,217.36
  4. Step 4: Simplify right side
    74,208.80x = 4,118,599,100.06
  5. Step 5: Solve for x
    x = 4,118,599,100.06/74,208.80
  6. Step 6: Final answer
    x = 55,500.14

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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.