Home / 76,781.47-105,960.15-42,793.44

Finding the Fourth Proportional to 76,781.47, 105,960.15 and 42,793.44

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Solution

The fourth proportional to 76,781.47, 105,960.15 and 42,793.44 is: 59,055.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,781.47 : 105,960.15 = 42,793.44 : x
  2. Step 2: Convert to fraction form
    76,781.47/105,960.15 = 42,793.44/x
  3. Step 3: Cross multiply
    76,781.47x = 105,960.15 × 42,793.44
  4. Step 4: Simplify right side
    76,781.47x = 4,534,399,222.08
  5. Step 5: Solve for x
    x = 4,534,399,222.08/76,781.47
  6. Step 6: Final answer
    x = 59,055.91

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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.