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Finding the Fourth Proportional to 57,856.50, 79,907.58 and 38,960.82

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Solution

The fourth proportional to 57,856.50, 79,907.58 and 38,960.82 is: 53,810.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,856.50 : 79,907.58 = 38,960.82 : x
  2. Step 2: Convert to fraction form
    57,856.50/79,907.58 = 38,960.82/x
  3. Step 3: Cross multiply
    57,856.50x = 79,907.58 × 38,960.82
  4. Step 4: Simplify right side
    57,856.50x = 3,113,264,841.02
  5. Step 5: Solve for x
    x = 3,113,264,841.02/57,856.50
  6. Step 6: Final answer
    x = 53,810.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.