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Finding the Fourth Proportional to 52,312.56, 78,468.86 and 21,169.68

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Solution

The fourth proportional to 52,312.56, 78,468.86 and 21,169.68 is: 31,754.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,312.56 : 78,468.86 = 21,169.68 : x
  2. Step 2: Convert to fraction form
    52,312.56/78,468.86 = 21,169.68/x
  3. Step 3: Cross multiply
    52,312.56x = 78,468.86 × 21,169.68
  4. Step 4: Simplify right side
    52,312.56x = 1,661,160,656.16
  5. Step 5: Solve for x
    x = 1,661,160,656.16/52,312.56
  6. Step 6: Final answer
    x = 31,754.53

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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.