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Finding the Fourth Proportional to 72,148.56, 108,261.60 and 35,212.56

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Solution

The fourth proportional to 72,148.56, 108,261.60 and 35,212.56 is: 52,837.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,148.56 : 108,261.60 = 35,212.56 : x
  2. Step 2: Convert to fraction form
    72,148.56/108,261.60 = 35,212.56/x
  3. Step 3: Cross multiply
    72,148.56x = 108,261.60 × 35,212.56
  4. Step 4: Simplify right side
    72,148.56x = 3,812,168,085.70
  5. Step 5: Solve for x
    x = 3,812,168,085.70/72,148.56
  6. Step 6: Final answer
    x = 52,837.76

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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.