Home / 48,457.20-72,679.98-12,921.19

Finding the Fourth Proportional to 48,457.20, 72,679.98 and 12,921.19

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Solution

The fourth proportional to 48,457.20, 72,679.98 and 12,921.19 is: 19,380.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,457.20 : 72,679.98 = 12,921.19 : x
  2. Step 2: Convert to fraction form
    48,457.20/72,679.98 = 12,921.19/x
  3. Step 3: Cross multiply
    48,457.20x = 72,679.98 × 12,921.19
  4. Step 4: Simplify right side
    48,457.20x = 939,111,697.53
  5. Step 5: Solve for x
    x = 939,111,697.53/48,457.20
  6. Step 6: Final answer
    x = 19,380.23

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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.