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Finding the Fourth Proportional to 30,673.75, 46,008.06 and 8,487.40

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Solution

The fourth proportional to 30,673.75, 46,008.06 and 8,487.40 is: 12,730.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,673.75 : 46,008.06 = 8,487.40 : x
  2. Step 2: Convert to fraction form
    30,673.75/46,008.06 = 8,487.40/x
  3. Step 3: Cross multiply
    30,673.75x = 46,008.06 × 8,487.40
  4. Step 4: Simplify right side
    30,673.75x = 390,488,808.44
  5. Step 5: Solve for x
    x = 390,488,808.44/30,673.75
  6. Step 6: Final answer
    x = 12,730.39

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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.