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Finding the Fourth Proportional to 72,376.80, 108,478.80 and 37,298.40

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Solution

The fourth proportional to 72,376.80, 108,478.80 and 37,298.40 is: 55,903.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,376.80 : 108,478.80 = 37,298.40 : x
  2. Step 2: Convert to fraction form
    72,376.80/108,478.80 = 37,298.40/x
  3. Step 3: Cross multiply
    72,376.80x = 108,478.80 × 37,298.40
  4. Step 4: Simplify right side
    72,376.80x = 4,046,085,673.92
  5. Step 5: Solve for x
    x = 4,046,085,673.92/72,376.80
  6. Step 6: Final answer
    x = 55,903.07

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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.