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Finding the Fourth Proportional to 55,379.36, 82,602.16 and 53,719.28

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Solution

The fourth proportional to 55,379.36, 82,602.16 and 53,719.28 is: 80,126.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,379.36 : 82,602.16 = 53,719.28 : x
  2. Step 2: Convert to fraction form
    55,379.36/82,602.16 = 53,719.28/x
  3. Step 3: Cross multiply
    55,379.36x = 82,602.16 × 53,719.28
  4. Step 4: Simplify right side
    55,379.36x = 4,437,328,561.64
  5. Step 5: Solve for x
    x = 4,437,328,561.64/55,379.36
  6. Step 6: Final answer
    x = 80,126.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.