Home / 42,121.84-58,137.24-28,725.07

Finding the Fourth Proportional to 42,121.84, 58,137.24 and 28,725.07

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Solution

The fourth proportional to 42,121.84, 58,137.24 and 28,725.07 is: 39,646.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,121.84 : 58,137.24 = 28,725.07 : x
  2. Step 2: Convert to fraction form
    42,121.84/58,137.24 = 28,725.07/x
  3. Step 3: Cross multiply
    42,121.84x = 58,137.24 × 28,725.07
  4. Step 4: Simplify right side
    42,121.84x = 1,669,996,288.61
  5. Step 5: Solve for x
    x = 1,669,996,288.61/42,121.84
  6. Step 6: Final answer
    x = 39,646.80

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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.