Home / 48,428.64-72,644.40-18,853.20

Finding the Fourth Proportional to 48,428.64, 72,644.40 and 18,853.20

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Solution

The fourth proportional to 48,428.64, 72,644.40 and 18,853.20 is: 28,280.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,428.64 : 72,644.40 = 18,853.20 : x
  2. Step 2: Convert to fraction form
    48,428.64/72,644.40 = 18,853.20/x
  3. Step 3: Cross multiply
    48,428.64x = 72,644.40 × 18,853.20
  4. Step 4: Simplify right side
    48,428.64x = 1,369,579,402.08
  5. Step 5: Solve for x
    x = 1,369,579,402.08/48,428.64
  6. Step 6: Final answer
    x = 28,280.36

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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.