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Finding the Fourth Proportional to 52,477.70, 78,716.55 and 21,335.30

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Solution

The fourth proportional to 52,477.70, 78,716.55 and 21,335.30 is: 32,002.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,477.70 : 78,716.55 = 21,335.30 : x
  2. Step 2: Convert to fraction form
    52,477.70/78,716.55 = 21,335.30/x
  3. Step 3: Cross multiply
    52,477.70x = 78,716.55 × 21,335.30
  4. Step 4: Simplify right side
    52,477.70x = 1,679,441,209.22
  5. Step 5: Solve for x
    x = 1,679,441,209.22/52,477.70
  6. Step 6: Final answer
    x = 32,002.95

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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.