Home / 74,021.49-102,152.28-42,185.25

Finding the Fourth Proportional to 74,021.49, 102,152.28 and 42,185.25

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Solution

The fourth proportional to 74,021.49, 102,152.28 and 42,185.25 is: 58,217.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,021.49 : 102,152.28 = 42,185.25 : x
  2. Step 2: Convert to fraction form
    74,021.49/102,152.28 = 42,185.25/x
  3. Step 3: Cross multiply
    74,021.49x = 102,152.28 × 42,185.25
  4. Step 4: Simplify right side
    74,021.49x = 4,309,319,469.87
  5. Step 5: Solve for x
    x = 4,309,319,469.87/74,021.49
  6. Step 6: Final answer
    x = 58,217.14

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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.