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Finding the Fourth Proportional to 48,259.40, 72,386.40 and 14,979.20

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Solution

The fourth proportional to 48,259.40, 72,386.40 and 14,979.20 is: 22,467.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,259.40 : 72,386.40 = 14,979.20 : x
  2. Step 2: Convert to fraction form
    48,259.40/72,386.40 = 14,979.20/x
  3. Step 3: Cross multiply
    48,259.40x = 72,386.40 × 14,979.20
  4. Step 4: Simplify right side
    48,259.40x = 1,084,290,362.88
  5. Step 5: Solve for x
    x = 1,084,290,362.88/48,259.40
  6. Step 6: Final answer
    x = 22,467.96

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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.