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Finding the Fourth Proportional to 56,967.40, 85,220.70 and 51,437.80

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Solution

The fourth proportional to 56,967.40, 85,220.70 and 51,437.80 is: 76,948.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,967.40 : 85,220.70 = 51,437.80 : x
  2. Step 2: Convert to fraction form
    56,967.40/85,220.70 = 51,437.80/x
  3. Step 3: Cross multiply
    56,967.40x = 85,220.70 × 51,437.80
  4. Step 4: Simplify right side
    56,967.40x = 4,383,565,322.46
  5. Step 5: Solve for x
    x = 4,383,565,322.46/56,967.40
  6. Step 6: Final answer
    x = 76,948.66

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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.