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Finding the Fourth Proportional to 72,395.40, 108,564.30 and 25,624.20

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Solution

The fourth proportional to 72,395.40, 108,564.30 and 25,624.20 is: 38,426.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,395.40 : 108,564.30 = 25,624.20 : x
  2. Step 2: Convert to fraction form
    72,395.40/108,564.30 = 25,624.20/x
  3. Step 3: Cross multiply
    72,395.40x = 108,564.30 × 25,624.20
  4. Step 4: Simplify right side
    72,395.40x = 2,781,873,336.06
  5. Step 5: Solve for x
    x = 2,781,873,336.06/72,395.40
  6. Step 6: Final answer
    x = 38,426.11

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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.