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Finding the Fourth Proportional to 58,279.92, 87,368.04 and 21,335.28

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Solution

The fourth proportional to 58,279.92, 87,368.04 and 21,335.28 is: 31,983.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,279.92 : 87,368.04 = 21,335.28 : x
  2. Step 2: Convert to fraction form
    58,279.92/87,368.04 = 21,335.28/x
  3. Step 3: Cross multiply
    58,279.92x = 87,368.04 × 21,335.28
  4. Step 4: Simplify right side
    58,279.92x = 1,864,021,596.45
  5. Step 5: Solve for x
    x = 1,864,021,596.45/58,279.92
  6. Step 6: Final answer
    x = 31,983.94

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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.