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Finding the Fourth Proportional to 52,475.70, 78,713.55 and 21,333.30

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Solution

The fourth proportional to 52,475.70, 78,713.55 and 21,333.30 is: 31,999.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,475.70 : 78,713.55 = 21,333.30 : x
  2. Step 2: Convert to fraction form
    52,475.70/78,713.55 = 21,333.30/x
  3. Step 3: Cross multiply
    52,475.70x = 78,713.55 × 21,333.30
  4. Step 4: Simplify right side
    52,475.70x = 1,679,219,776.22
  5. Step 5: Solve for x
    x = 1,679,219,776.22/52,475.70
  6. Step 6: Final answer
    x = 31,999.95

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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.