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Finding the Fourth Proportional to 64,219.70, 96,329.55 and 56,443.70

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Solution

The fourth proportional to 64,219.70, 96,329.55 and 56,443.70 is: 84,665.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,219.70 : 96,329.55 = 56,443.70 : x
  2. Step 2: Convert to fraction form
    64,219.70/96,329.55 = 56,443.70/x
  3. Step 3: Cross multiply
    64,219.70x = 96,329.55 × 56,443.70
  4. Step 4: Simplify right side
    64,219.70x = 5,437,196,221.34
  5. Step 5: Solve for x
    x = 5,437,196,221.34/64,219.70
  6. Step 6: Final answer
    x = 84,665.55

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Similar ratio
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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.