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Finding the Fourth Proportional to 81,625.98, 112,637.68 and 45,809.07

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Solution

The fourth proportional to 81,625.98, 112,637.68 and 45,809.07 is: 63,213.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,625.98 : 112,637.68 = 45,809.07 : x
  2. Step 2: Convert to fraction form
    81,625.98/112,637.68 = 45,809.07/x
  3. Step 3: Cross multiply
    81,625.98x = 112,637.68 × 45,809.07
  4. Step 4: Simplify right side
    81,625.98x = 5,159,827,649.35
  5. Step 5: Solve for x
    x = 5,159,827,649.35/81,625.98
  6. Step 6: Final answer
    x = 63,213.05

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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.