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Finding the Fourth Proportional to 56,519.92, 84,728.04 and 19,558

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Solution

The fourth proportional to 56,519.92, 84,728.04 and 19,558 is: 29,319.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,519.92 : 84,728.04 = 19,558 : x
  2. Step 2: Convert to fraction form
    56,519.92/84,728.04 = 19,558/x
  3. Step 3: Cross multiply
    56,519.92x = 84,728.04 × 19,558
  4. Step 4: Simplify right side
    56,519.92x = 1,657,111,006.32
  5. Step 5: Solve for x
    x = 1,657,111,006.32/56,519.92
  6. Step 6: Final answer
    x = 29,319.06

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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.