Home / 85,716.42-128,495.88-29,543.19

Finding the Fourth Proportional to 85,716.42, 128,495.88 and 29,543.19

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Solution

The fourth proportional to 85,716.42, 128,495.88 and 29,543.19 is: 44,287.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,716.42 : 128,495.88 = 29,543.19 : x
  2. Step 2: Convert to fraction form
    85,716.42/128,495.88 = 29,543.19/x
  3. Step 3: Cross multiply
    85,716.42x = 128,495.88 × 29,543.19
  4. Step 4: Simplify right side
    85,716.42x = 3,796,178,197.06
  5. Step 5: Solve for x
    x = 3,796,178,197.06/85,716.42
  6. Step 6: Final answer
    x = 44,287.64

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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.