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Finding the Fourth Proportional to 56,009.80, 84,111.90 and 54,260.20

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Solution

The fourth proportional to 56,009.80, 84,111.90 and 54,260.20 is: 81,484.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,009.80 : 84,111.90 = 54,260.20 : x
  2. Step 2: Convert to fraction form
    56,009.80/84,111.90 = 54,260.20/x
  3. Step 3: Cross multiply
    56,009.80x = 84,111.90 × 54,260.20
  4. Step 4: Simplify right side
    56,009.80x = 4,563,928,516.38
  5. Step 5: Solve for x
    x = 4,563,928,516.38/56,009.80
  6. Step 6: Final answer
    x = 81,484.46

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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.