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Finding the Fourth Proportional to 86,382.86, 119,230.62 and 56,243.48

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Solution

The fourth proportional to 86,382.86, 119,230.62 and 56,243.48 is: 77,630.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,382.86 : 119,230.62 = 56,243.48 : x
  2. Step 2: Convert to fraction form
    86,382.86/119,230.62 = 56,243.48/x
  3. Step 3: Cross multiply
    86,382.86x = 119,230.62 × 56,243.48
  4. Step 4: Simplify right side
    86,382.86x = 6,705,944,991.36
  5. Step 5: Solve for x
    x = 6,705,944,991.36/86,382.86
  6. Step 6: Final answer
    x = 77,630.50

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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.