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Finding the Fourth Proportional to 48,487, 72,730.62 and 15,655

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Solution

The fourth proportional to 48,487, 72,730.62 and 15,655 is: 23,482.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,487 : 72,730.62 = 15,655 : x
  2. Step 2: Convert to fraction form
    48,487/72,730.62 = 15,655/x
  3. Step 3: Cross multiply
    48,487x = 72,730.62 × 15,655
  4. Step 4: Simplify right side
    48,487x = 1,138,597,856.10
  5. Step 5: Solve for x
    x = 1,138,597,856.10/48,487
  6. Step 6: Final answer
    x = 23,482.54

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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.