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Finding the Fourth Proportional to 52,482.50, 78,720.50 and 21,316.94

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Solution

The fourth proportional to 52,482.50, 78,720.50 and 21,316.94 is: 31,974.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,482.50 : 78,720.50 = 21,316.94 : x
  2. Step 2: Convert to fraction form
    52,482.50/78,720.50 = 21,316.94/x
  3. Step 3: Cross multiply
    52,482.50x = 78,720.50 × 21,316.94
  4. Step 4: Simplify right side
    52,482.50x = 1,678,079,781.67
  5. Step 5: Solve for x
    x = 1,678,079,781.67/52,482.50
  6. Step 6: Final answer
    x = 31,974.09

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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.