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Finding the Fourth Proportional to 58,442.61, 87,644.03 and 18,989.94

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Solution

The fourth proportional to 58,442.61, 87,644.03 and 18,989.94 is: 28,478.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,442.61 : 87,644.03 = 18,989.94 : x
  2. Step 2: Convert to fraction form
    58,442.61/87,644.03 = 18,989.94/x
  3. Step 3: Cross multiply
    58,442.61x = 87,644.03 × 18,989.94
  4. Step 4: Simplify right side
    58,442.61x = 1,664,354,776.11
  5. Step 5: Solve for x
    x = 1,664,354,776.11/58,442.61
  6. Step 6: Final answer
    x = 28,478.45

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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.