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Finding the Fourth Proportional to 58,672.05, 87,978.95 and 18,685.82

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Solution

The fourth proportional to 58,672.05, 87,978.95 and 18,685.82 is: 28,019.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,672.05 : 87,978.95 = 18,685.82 : x
  2. Step 2: Convert to fraction form
    58,672.05/87,978.95 = 18,685.82/x
  3. Step 3: Cross multiply
    58,672.05x = 87,978.95 × 18,685.82
  4. Step 4: Simplify right side
    58,672.05x = 1,643,958,730.06
  5. Step 5: Solve for x
    x = 1,643,958,730.06/58,672.05
  6. Step 6: Final answer
    x = 28,019.45

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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.