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Finding the Fourth Proportional to 57,360, 79,161.12 and 35,008.32

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Solution

The fourth proportional to 57,360, 79,161.12 and 35,008.32 is: 48,314.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,360 : 79,161.12 = 35,008.32 : x
  2. Step 2: Convert to fraction form
    57,360/79,161.12 = 35,008.32/x
  3. Step 3: Cross multiply
    57,360x = 79,161.12 × 35,008.32
  4. Step 4: Simplify right side
    57,360x = 2,771,297,820.52
  5. Step 5: Solve for x
    x = 2,771,297,820.52/57,360
  6. Step 6: Final answer
    x = 48,314.12

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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.