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Finding the Fourth Proportional to 44,440.80, 66,670.80 and 13,279.20

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Solution

The fourth proportional to 44,440.80, 66,670.80 and 13,279.20 is: 19,921.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,440.80 : 66,670.80 = 13,279.20 : x
  2. Step 2: Convert to fraction form
    44,440.80/66,670.80 = 13,279.20/x
  3. Step 3: Cross multiply
    44,440.80x = 66,670.80 × 13,279.20
  4. Step 4: Simplify right side
    44,440.80x = 885,334,887.36
  5. Step 5: Solve for x
    x = 885,334,887.36/44,440.80
  6. Step 6: Final answer
    x = 19,921.67

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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.