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Finding the Fourth Proportional to 56,980.80, 85,471.20 and 56,203.20

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Solution

The fourth proportional to 56,980.80, 85,471.20 and 56,203.20 is: 84,304.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,980.80 : 85,471.20 = 56,203.20 : x
  2. Step 2: Convert to fraction form
    56,980.80/85,471.20 = 56,203.20/x
  3. Step 3: Cross multiply
    56,980.80x = 85,471.20 × 56,203.20
  4. Step 4: Simplify right side
    56,980.80x = 4,803,754,947.84
  5. Step 5: Solve for x
    x = 4,803,754,947.84/56,980.80
  6. Step 6: Final answer
    x = 84,304.80

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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.