Home / 57,947.10-86,931.45-18,515.40

Finding the Fourth Proportional to 57,947.10, 86,931.45 and 18,515.40

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Solution

The fourth proportional to 57,947.10, 86,931.45 and 18,515.40 is: 27,776.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,947.10 : 86,931.45 = 18,515.40 : x
  2. Step 2: Convert to fraction form
    57,947.10/86,931.45 = 18,515.40/x
  3. Step 3: Cross multiply
    57,947.10x = 86,931.45 × 18,515.40
  4. Step 4: Simplify right side
    57,947.10x = 1,609,570,569.33
  5. Step 5: Solve for x
    x = 1,609,570,569.33/57,947.10
  6. Step 6: Final answer
    x = 27,776.55

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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.