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Finding the Fourth Proportional to 55,071.76, 82,607.72 and 13,518.76

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Solution

The fourth proportional to 55,071.76, 82,607.72 and 13,518.76 is: 20,278.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,071.76 : 82,607.72 = 13,518.76 : x
  2. Step 2: Convert to fraction form
    55,071.76/82,607.72 = 13,518.76/x
  3. Step 3: Cross multiply
    55,071.76x = 82,607.72 × 13,518.76
  4. Step 4: Simplify right side
    55,071.76x = 1,116,753,940.83
  5. Step 5: Solve for x
    x = 1,116,753,940.83/55,071.76
  6. Step 6: Final answer
    x = 20,278.16

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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.