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Finding the Fourth Proportional to 56,307.20, 84,460.80 and 51,123.20

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Solution

The fourth proportional to 56,307.20, 84,460.80 and 51,123.20 is: 76,684.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,307.20 : 84,460.80 = 51,123.20 : x
  2. Step 2: Convert to fraction form
    56,307.20/84,460.80 = 51,123.20/x
  3. Step 3: Cross multiply
    56,307.20x = 84,460.80 × 51,123.20
  4. Step 4: Simplify right side
    56,307.20x = 4,317,906,370.56
  5. Step 5: Solve for x
    x = 4,317,906,370.56/56,307.20
  6. Step 6: Final answer
    x = 76,684.80

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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.