Home / 74,017.20-102,144.90-42,185.40

Finding the Fourth Proportional to 74,017.20, 102,144.90 and 42,185.40

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Solution

The fourth proportional to 74,017.20, 102,144.90 and 42,185.40 is: 58,216.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,017.20 : 102,144.90 = 42,185.40 : x
  2. Step 2: Convert to fraction form
    74,017.20/102,144.90 = 42,185.40/x
  3. Step 3: Cross multiply
    74,017.20x = 102,144.90 × 42,185.40
  4. Step 4: Simplify right side
    74,017.20x = 4,309,023,464.46
  5. Step 5: Solve for x
    x = 4,309,023,464.46/74,017.20
  6. Step 6: Final answer
    x = 58,216.52

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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.