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Finding the Fourth Proportional to 58,260, 87,390.24 and 21,324

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Solution

The fourth proportional to 58,260, 87,390.24 and 21,324 is: 31,986.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,260 : 87,390.24 = 21,324 : x
  2. Step 2: Convert to fraction form
    58,260/87,390.24 = 21,324/x
  3. Step 3: Cross multiply
    58,260x = 87,390.24 × 21,324
  4. Step 4: Simplify right side
    58,260x = 1,863,509,477.76
  5. Step 5: Solve for x
    x = 1,863,509,477.76/58,260
  6. Step 6: Final answer
    x = 31,986.09

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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.