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Finding the Fourth Proportional to 97,881.90, 146,832.54 and 31,305.30

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Solution

The fourth proportional to 97,881.90, 146,832.54 and 31,305.30 is: 46,961.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,881.90 : 146,832.54 = 31,305.30 : x
  2. Step 2: Convert to fraction form
    97,881.90/146,832.54 = 31,305.30/x
  3. Step 3: Cross multiply
    97,881.90x = 146,832.54 × 31,305.30
  4. Step 4: Simplify right side
    97,881.90x = 4,596,636,714.46
  5. Step 5: Solve for x
    x = 4,596,636,714.46/97,881.90
  6. Step 6: Final answer
    x = 46,961.05

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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.