Home / 74,371.50-102,650.40-42,558.75

Finding the Fourth Proportional to 74,371.50, 102,650.40 and 42,558.75

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Solution

The fourth proportional to 74,371.50, 102,650.40 and 42,558.75 is: 58,741.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,371.50 : 102,650.40 = 42,558.75 : x
  2. Step 2: Convert to fraction form
    74,371.50/102,650.40 = 42,558.75/x
  3. Step 3: Cross multiply
    74,371.50x = 102,650.40 × 42,558.75
  4. Step 4: Simplify right side
    74,371.50x = 4,368,672,711
  5. Step 5: Solve for x
    x = 4,368,672,711/74,371.50
  6. Step 6: Final answer
    x = 58,741.22

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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.