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Finding the Fourth Proportional to 78,473.88, 108,293.16 and 58,420.44

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Solution

The fourth proportional to 78,473.88, 108,293.16 and 58,420.44 is: 80,619.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,473.88 : 108,293.16 = 58,420.44 : x
  2. Step 2: Convert to fraction form
    78,473.88/108,293.16 = 58,420.44/x
  3. Step 3: Cross multiply
    78,473.88x = 108,293.16 × 58,420.44
  4. Step 4: Simplify right side
    78,473.88x = 6,326,534,056.19
  5. Step 5: Solve for x
    x = 6,326,534,056.19/78,473.88
  6. Step 6: Final answer
    x = 80,619.62

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1.5x scale

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.