Home / 74,009.35-102,135.50-42,173.11

Finding the Fourth Proportional to 74,009.35, 102,135.50 and 42,173.11

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Solution

The fourth proportional to 74,009.35, 102,135.50 and 42,173.11 is: 58,200.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,009.35 : 102,135.50 = 42,173.11 : x
  2. Step 2: Convert to fraction form
    74,009.35/102,135.50 = 42,173.11/x
  3. Step 3: Cross multiply
    74,009.35x = 102,135.50 × 42,173.11
  4. Step 4: Simplify right side
    74,009.35x = 4,307,371,676.41
  5. Step 5: Solve for x
    x = 4,307,371,676.41/74,009.35
  6. Step 6: Final answer
    x = 58,200.37

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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.