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Finding the Fourth Proportional to 72,306.20, 108,459.30 and 37,314.20

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Solution

The fourth proportional to 72,306.20, 108,459.30 and 37,314.20 is: 55,971.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,306.20 : 108,459.30 = 37,314.20 : x
  2. Step 2: Convert to fraction form
    72,306.20/108,459.30 = 37,314.20/x
  3. Step 3: Cross multiply
    72,306.20x = 108,459.30 × 37,314.20
  4. Step 4: Simplify right side
    72,306.20x = 4,047,072,012.06
  5. Step 5: Solve for x
    x = 4,047,072,012.06/72,306.20
  6. Step 6: Final answer
    x = 55,971.30

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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.