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Finding the Fourth Proportional to 76,999.86, 106,252.89 and 43,003.62

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Solution

The fourth proportional to 76,999.86, 106,252.89 and 43,003.62 is: 59,341.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,999.86 : 106,252.89 = 43,003.62 : x
  2. Step 2: Convert to fraction form
    76,999.86/106,252.89 = 43,003.62/x
  3. Step 3: Cross multiply
    76,999.86x = 106,252.89 × 43,003.62
  4. Step 4: Simplify right side
    76,999.86x = 4,569,258,905.46
  5. Step 5: Solve for x
    x = 4,569,258,905.46/76,999.86
  6. Step 6: Final answer
    x = 59,341.13

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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.