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Finding the Fourth Proportional to 37,070.40, 55,605.42 and 12,446.40

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Solution

The fourth proportional to 37,070.40, 55,605.42 and 12,446.40 is: 18,669.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,070.40 : 55,605.42 = 12,446.40 : x
  2. Step 2: Convert to fraction form
    37,070.40/55,605.42 = 12,446.40/x
  3. Step 3: Cross multiply
    37,070.40x = 55,605.42 × 12,446.40
  4. Step 4: Simplify right side
    37,070.40x = 692,087,299.49
  5. Step 5: Solve for x
    x = 692,087,299.49/37,070.40
  6. Step 6: Final answer
    x = 18,669.54

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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.