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Finding the Fourth Proportional to 57,620.62, 79,547.84 and 39,811.51

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Solution

The fourth proportional to 57,620.62, 79,547.84 and 39,811.51 is: 54,961.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,620.62 : 79,547.84 = 39,811.51 : x
  2. Step 2: Convert to fraction form
    57,620.62/79,547.84 = 39,811.51/x
  3. Step 3: Cross multiply
    57,620.62x = 79,547.84 × 39,811.51
  4. Step 4: Simplify right side
    57,620.62x = 3,166,919,627.64
  5. Step 5: Solve for x
    x = 3,166,919,627.64/57,620.62
  6. Step 6: Final answer
    x = 54,961.57

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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.