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Finding the Fourth Proportional to 30,323.16, 45,489.58 and 8,978.04

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Solution

The fourth proportional to 30,323.16, 45,489.58 and 8,978.04 is: 13,468.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,323.16 : 45,489.58 = 8,978.04 : x
  2. Step 2: Convert to fraction form
    30,323.16/45,489.58 = 8,978.04/x
  3. Step 3: Cross multiply
    30,323.16x = 45,489.58 × 8,978.04
  4. Step 4: Simplify right side
    30,323.16x = 408,407,246.38
  5. Step 5: Solve for x
    x = 408,407,246.38/30,323.16
  6. Step 6: Final answer
    x = 13,468.49

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1.5x scale

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.