Home / 52,563.48-78,878.16-21,398.70

Finding the Fourth Proportional to 52,563.48, 78,878.16 and 21,398.70

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Solution

The fourth proportional to 52,563.48, 78,878.16 and 21,398.70 is: 32,111.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,563.48 : 78,878.16 = 21,398.70 : x
  2. Step 2: Convert to fraction form
    52,563.48/78,878.16 = 21,398.70/x
  3. Step 3: Cross multiply
    52,563.48x = 78,878.16 × 21,398.70
  4. Step 4: Simplify right side
    52,563.48x = 1,687,890,082.39
  5. Step 5: Solve for x
    x = 1,687,890,082.39/52,563.48
  6. Step 6: Final answer
    x = 32,111.46

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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.