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Finding the Fourth Proportional to 56,382.59, 84,580.79 and 18,430.94

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Solution

The fourth proportional to 56,382.59, 84,580.79 and 18,430.94 is: 27,648.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,382.59 : 84,580.79 = 18,430.94 : x
  2. Step 2: Convert to fraction form
    56,382.59/84,580.79 = 18,430.94/x
  3. Step 3: Cross multiply
    56,382.59x = 84,580.79 × 18,430.94
  4. Step 4: Simplify right side
    56,382.59x = 1,558,902,950.58
  5. Step 5: Solve for x
    x = 1,558,902,950.58/56,382.59
  6. Step 6: Final answer
    x = 27,648.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.