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Finding the Fourth Proportional to 56,847.96, 78,435 and 54,605.88

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Solution

The fourth proportional to 56,847.96, 78,435 and 54,605.88 is: 75,341.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,847.96 : 78,435 = 54,605.88 : x
  2. Step 2: Convert to fraction form
    56,847.96/78,435 = 54,605.88/x
  3. Step 3: Cross multiply
    56,847.96x = 78,435 × 54,605.88
  4. Step 4: Simplify right side
    56,847.96x = 4,283,012,197.80
  5. Step 5: Solve for x
    x = 4,283,012,197.80/56,847.96
  6. Step 6: Final answer
    x = 75,341.53

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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.