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Finding the Fourth Proportional to 30,104.40, 45,070.20 and 18,440.40

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Solution

The fourth proportional to 30,104.40, 45,070.20 and 18,440.40 is: 27,607.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,104.40 : 45,070.20 = 18,440.40 : x
  2. Step 2: Convert to fraction form
    30,104.40/45,070.20 = 18,440.40/x
  3. Step 3: Cross multiply
    30,104.40x = 45,070.20 × 18,440.40
  4. Step 4: Simplify right side
    30,104.40x = 831,112,516.08
  5. Step 5: Solve for x
    x = 831,112,516.08/30,104.40
  6. Step 6: Final answer
    x = 27,607.68

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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.