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Finding the Fourth Proportional to 71,602.12, 98,810.95 and 39,773.98

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Solution

The fourth proportional to 71,602.12, 98,810.95 and 39,773.98 is: 54,888.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,602.12 : 98,810.95 = 39,773.98 : x
  2. Step 2: Convert to fraction form
    71,602.12/98,810.95 = 39,773.98/x
  3. Step 3: Cross multiply
    71,602.12x = 98,810.95 × 39,773.98
  4. Step 4: Simplify right side
    71,602.12x = 3,930,104,749.08
  5. Step 5: Solve for x
    x = 3,930,104,749.08/71,602.12
  6. Step 6: Final answer
    x = 54,888.11

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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.