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Finding the Fourth Proportional to 92,581.60, 138,521.40 and 61,477.60

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Solution

The fourth proportional to 92,581.60, 138,521.40 and 61,477.60 is: 91,983.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,581.60 : 138,521.40 = 61,477.60 : x
  2. Step 2: Convert to fraction form
    92,581.60/138,521.40 = 61,477.60/x
  3. Step 3: Cross multiply
    92,581.60x = 138,521.40 × 61,477.60
  4. Step 4: Simplify right side
    92,581.60x = 8,515,963,220.64
  5. Step 5: Solve for x
    x = 8,515,963,220.64/92,581.60
  6. Step 6: Final answer
    x = 91,983.32

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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.