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Finding the Fourth Proportional to 78,602.33, 108,473.49 and 42,792.95

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Solution

The fourth proportional to 78,602.33, 108,473.49 and 42,792.95 is: 59,055.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,602.33 : 108,473.49 = 42,792.95 : x
  2. Step 2: Convert to fraction form
    78,602.33/108,473.49 = 42,792.95/x
  3. Step 3: Cross multiply
    78,602.33x = 108,473.49 × 42,792.95
  4. Step 4: Simplify right side
    78,602.33x = 4,641,900,905.08
  5. Step 5: Solve for x
    x = 4,641,900,905.08/78,602.33
  6. Step 6: Final answer
    x = 59,055.51

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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.