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Finding the Fourth Proportional to 75,808.90, 113,822.70 and 57,219.40

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Solution

The fourth proportional to 75,808.90, 113,822.70 and 57,219.40 is: 85,911.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,808.90 : 113,822.70 = 57,219.40 : x
  2. Step 2: Convert to fraction form
    75,808.90/113,822.70 = 57,219.40/x
  3. Step 3: Cross multiply
    75,808.90x = 113,822.70 × 57,219.40
  4. Step 4: Simplify right side
    75,808.90x = 6,512,866,600.38
  5. Step 5: Solve for x
    x = 6,512,866,600.38/75,808.90
  6. Step 6: Final answer
    x = 85,911.64

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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.