Home / 71,780.80-99,056.64-41,972.80

Finding the Fourth Proportional to 71,780.80, 99,056.64 and 41,972.80

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Solution

The fourth proportional to 71,780.80, 99,056.64 and 41,972.80 is: 57,921.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,780.80 : 99,056.64 = 41,972.80 : x
  2. Step 2: Convert to fraction form
    71,780.80/99,056.64 = 41,972.80/x
  3. Step 3: Cross multiply
    71,780.80x = 99,056.64 × 41,972.80
  4. Step 4: Simplify right side
    71,780.80x = 4,157,684,539.39
  5. Step 5: Solve for x
    x = 4,157,684,539.39/71,780.80
  6. Step 6: Final answer
    x = 57,921.96

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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.