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Finding the Fourth Proportional to 76,670.73, 105,820.29 and 43,136.73

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Solution

The fourth proportional to 76,670.73, 105,820.29 and 43,136.73 is: 59,536.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,670.73 : 105,820.29 = 43,136.73 : x
  2. Step 2: Convert to fraction form
    76,670.73/105,820.29 = 43,136.73/x
  3. Step 3: Cross multiply
    76,670.73x = 105,820.29 × 43,136.73
  4. Step 4: Simplify right side
    76,670.73x = 4,564,741,278.25
  5. Step 5: Solve for x
    x = 4,564,741,278.25/76,670.73
  6. Step 6: Final answer
    x = 59,536.95

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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.