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Finding the Fourth Proportional to 47,279.01, 70,918.74 and 13,999.70

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Solution

The fourth proportional to 47,279.01, 70,918.74 and 13,999.70 is: 20,999.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,279.01 : 70,918.74 = 13,999.70 : x
  2. Step 2: Convert to fraction form
    47,279.01/70,918.74 = 13,999.70/x
  3. Step 3: Cross multiply
    47,279.01x = 70,918.74 × 13,999.70
  4. Step 4: Simplify right side
    47,279.01x = 992,841,261.67
  5. Step 5: Solve for x
    x = 992,841,261.67/47,279.01
  6. Step 6: Final answer
    x = 20,999.62

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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.