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Finding the Fourth Proportional to 56,478.60, 77,990.04 and 35,294.04

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Solution

The fourth proportional to 56,478.60, 77,990.04 and 35,294.04 is: 48,736.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,478.60 : 77,990.04 = 35,294.04 : x
  2. Step 2: Convert to fraction form
    56,478.60/77,990.04 = 35,294.04/x
  3. Step 3: Cross multiply
    56,478.60x = 77,990.04 × 35,294.04
  4. Step 4: Simplify right side
    56,478.60x = 2,752,583,591.36
  5. Step 5: Solve for x
    x = 2,752,583,591.36/56,478.60
  6. Step 6: Final answer
    x = 48,736.75

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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.