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Finding the Fourth Proportional to 72,347.88, 99,822.05 and 41,730.34

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Solution

The fourth proportional to 72,347.88, 99,822.05 and 41,730.34 is: 57,577.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,347.88 : 99,822.05 = 41,730.34 : x
  2. Step 2: Convert to fraction form
    72,347.88/99,822.05 = 41,730.34/x
  3. Step 3: Cross multiply
    72,347.88x = 99,822.05 × 41,730.34
  4. Step 4: Simplify right side
    72,347.88x = 4,165,607,854.08
  5. Step 5: Solve for x
    x = 4,165,607,854.08/72,347.88
  6. Step 6: Final answer
    x = 57,577.47

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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.