Home / 42,136.40-58,171.57-28,727.36

Finding the Fourth Proportional to 42,136.40, 58,171.57 and 28,727.36

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Solution

The fourth proportional to 42,136.40, 58,171.57 and 28,727.36 is: 39,659.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,136.40 : 58,171.57 = 28,727.36 : x
  2. Step 2: Convert to fraction form
    42,136.40/58,171.57 = 28,727.36/x
  3. Step 3: Cross multiply
    42,136.40x = 58,171.57 × 28,727.36
  4. Step 4: Simplify right side
    42,136.40x = 1,671,115,488.62
  5. Step 5: Solve for x
    x = 1,671,115,488.62/42,136.40
  6. Step 6: Final answer
    x = 39,659.66

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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.