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Finding the Fourth Proportional to 91,579.41, 137,388.84 and 28,398.26

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Solution

The fourth proportional to 91,579.41, 137,388.84 and 28,398.26 is: 42,603.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,579.41 : 137,388.84 = 28,398.26 : x
  2. Step 2: Convert to fraction form
    91,579.41/137,388.84 = 28,398.26/x
  3. Step 3: Cross multiply
    91,579.41x = 137,388.84 × 28,398.26
  4. Step 4: Simplify right side
    91,579.41x = 3,901,603,312.47
  5. Step 5: Solve for x
    x = 3,901,603,312.47/91,579.41
  6. Step 6: Final answer
    x = 42,603.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.