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Finding the Fourth Proportional to 48,278.40, 72,424.80 and 17,111.20

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Solution

The fourth proportional to 48,278.40, 72,424.80 and 17,111.20 is: 25,669.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,278.40 : 72,424.80 = 17,111.20 : x
  2. Step 2: Convert to fraction form
    48,278.40/72,424.80 = 17,111.20/x
  3. Step 3: Cross multiply
    48,278.40x = 72,424.80 × 17,111.20
  4. Step 4: Simplify right side
    48,278.40x = 1,239,275,237.76
  5. Step 5: Solve for x
    x = 1,239,275,237.76/48,278.40
  6. Step 6: Final answer
    x = 25,669.35

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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.