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Finding the Fourth Proportional to 105,755.85, 158,594.02 and 42,554.51

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Solution

The fourth proportional to 105,755.85, 158,594.02 and 42,554.51 is: 63,815.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,755.85 : 158,594.02 = 42,554.51 : x
  2. Step 2: Convert to fraction form
    105,755.85/158,594.02 = 42,554.51/x
  3. Step 3: Cross multiply
    105,755.85x = 158,594.02 × 42,554.51
  4. Step 4: Simplify right side
    105,755.85x = 6,748,890,597.26
  5. Step 5: Solve for x
    x = 6,748,890,597.26/105,755.85
  6. Step 6: Final answer
    x = 63,815.77

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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.