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Finding the Fourth Proportional to 78,730.11, 108,643.62 and 44,734.11

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Solution

The fourth proportional to 78,730.11, 108,643.62 and 44,734.11 is: 61,730.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,730.11 : 108,643.62 = 44,734.11 : x
  2. Step 2: Convert to fraction form
    78,730.11/108,643.62 = 44,734.11/x
  3. Step 3: Cross multiply
    78,730.11x = 108,643.62 × 44,734.11
  4. Step 4: Simplify right side
    78,730.11x = 4,860,075,104.66
  5. Step 5: Solve for x
    x = 4,860,075,104.66/78,730.11
  6. Step 6: Final answer
    x = 61,730.83

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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.