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Finding the Fourth Proportional to 49,606.40, 74,409.60 and 12,670.40

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Solution

The fourth proportional to 49,606.40, 74,409.60 and 12,670.40 is: 19,005.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,606.40 : 74,409.60 = 12,670.40 : x
  2. Step 2: Convert to fraction form
    49,606.40/74,409.60 = 12,670.40/x
  3. Step 3: Cross multiply
    49,606.40x = 74,409.60 × 12,670.40
  4. Step 4: Simplify right side
    49,606.40x = 942,799,395.84
  5. Step 5: Solve for x
    x = 942,799,395.84/49,606.40
  6. Step 6: Final answer
    x = 19,005.60

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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.