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Finding the Fourth Proportional to 56,941.80, 85,412.70 and 54,349.80

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Solution

The fourth proportional to 56,941.80, 85,412.70 and 54,349.80 is: 81,524.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,941.80 : 85,412.70 = 54,349.80 : x
  2. Step 2: Convert to fraction form
    56,941.80/85,412.70 = 54,349.80/x
  3. Step 3: Cross multiply
    56,941.80x = 85,412.70 × 54,349.80
  4. Step 4: Simplify right side
    56,941.80x = 4,642,163,162.46
  5. Step 5: Solve for x
    x = 4,642,163,162.46/56,941.80
  6. Step 6: Final answer
    x = 81,524.70

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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.