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Finding the Fourth Proportional to 78,511.01, 108,342.06 and 42,701

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Solution

The fourth proportional to 78,511.01, 108,342.06 and 42,701 is: 58,925.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,511.01 : 108,342.06 = 42,701 : x
  2. Step 2: Convert to fraction form
    78,511.01/108,342.06 = 42,701/x
  3. Step 3: Cross multiply
    78,511.01x = 108,342.06 × 42,701
  4. Step 4: Simplify right side
    78,511.01x = 4,626,314,304.06
  5. Step 5: Solve for x
    x = 4,626,314,304.06/78,511.01
  6. Step 6: Final answer
    x = 58,925.68

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.