Home / 76,781.12-105,964.44-43,253.60

Finding the Fourth Proportional to 76,781.12, 105,964.44 and 43,253.60

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Solution

The fourth proportional to 76,781.12, 105,964.44 and 43,253.60 is: 59,693.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,781.12 : 105,964.44 = 43,253.60 : x
  2. Step 2: Convert to fraction form
    76,781.12/105,964.44 = 43,253.60/x
  3. Step 3: Cross multiply
    76,781.12x = 105,964.44 × 43,253.60
  4. Step 4: Simplify right side
    76,781.12x = 4,583,343,501.98
  5. Step 5: Solve for x
    x = 4,583,343,501.98/76,781.12
  6. Step 6: Final answer
    x = 59,693.63

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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.