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Finding the Fourth Proportional to 57,130.59, 85,696.02 and 19,691.58

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Solution

The fourth proportional to 57,130.59, 85,696.02 and 19,691.58 is: 29,537.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,130.59 : 85,696.02 = 19,691.58 : x
  2. Step 2: Convert to fraction form
    57,130.59/85,696.02 = 19,691.58/x
  3. Step 3: Cross multiply
    57,130.59x = 85,696.02 × 19,691.58
  4. Step 4: Simplify right side
    57,130.59x = 1,687,490,033.51
  5. Step 5: Solve for x
    x = 1,687,490,033.51/57,130.59
  6. Step 6: Final answer
    x = 29,537.42

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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.