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Finding the Fourth Proportional to 72,212.80, 108,232.80 and 37,134.40

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Solution

The fourth proportional to 72,212.80, 108,232.80 and 37,134.40 is: 55,657.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,212.80 : 108,232.80 = 37,134.40 : x
  2. Step 2: Convert to fraction form
    72,212.80/108,232.80 = 37,134.40/x
  3. Step 3: Cross multiply
    72,212.80x = 108,232.80 × 37,134.40
  4. Step 4: Simplify right side
    72,212.80x = 4,019,160,088.32
  5. Step 5: Solve for x
    x = 4,019,160,088.32/72,212.80
  6. Step 6: Final answer
    x = 55,657.17

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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.