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Finding the Fourth Proportional to 51,393.60, 70,921.80 and 29,037.60

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Solution

The fourth proportional to 51,393.60, 70,921.80 and 29,037.60 is: 40,071.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,393.60 : 70,921.80 = 29,037.60 : x
  2. Step 2: Convert to fraction form
    51,393.60/70,921.80 = 29,037.60/x
  3. Step 3: Cross multiply
    51,393.60x = 70,921.80 × 29,037.60
  4. Step 4: Simplify right side
    51,393.60x = 2,059,398,859.68
  5. Step 5: Solve for x
    x = 2,059,398,859.68/51,393.60
  6. Step 6: Final answer
    x = 40,071.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.