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Finding the Fourth Proportional to 85,814.80, 118,424.46 and 52,280.80

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Solution

The fourth proportional to 85,814.80, 118,424.46 and 52,280.80 is: 72,147.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,814.80 : 118,424.46 = 52,280.80 : x
  2. Step 2: Convert to fraction form
    85,814.80/118,424.46 = 52,280.80/x
  3. Step 3: Cross multiply
    85,814.80x = 118,424.46 × 52,280.80
  4. Step 4: Simplify right side
    85,814.80x = 6,191,325,508.37
  5. Step 5: Solve for x
    x = 6,191,325,508.37/85,814.80
  6. Step 6: Final answer
    x = 72,147.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.