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Finding the Fourth Proportional to 78,643.44, 108,526.44 and 42,833.04

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Solution

The fourth proportional to 78,643.44, 108,526.44 and 42,833.04 is: 59,108.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,643.44 : 108,526.44 = 42,833.04 : x
  2. Step 2: Convert to fraction form
    78,643.44/108,526.44 = 42,833.04/x
  3. Step 3: Cross multiply
    78,643.44x = 108,526.44 × 42,833.04
  4. Step 4: Simplify right side
    78,643.44x = 4,648,517,345.58
  5. Step 5: Solve for x
    x = 4,648,517,345.58/78,643.44
  6. Step 6: Final answer
    x = 59,108.77

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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.