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Finding the Fourth Proportional to 56,959.81, 85,442.07 and 19,545.60

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Solution

The fourth proportional to 56,959.81, 85,442.07 and 19,545.60 is: 29,319.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,959.81 : 85,442.07 = 19,545.60 : x
  2. Step 2: Convert to fraction form
    56,959.81/85,442.07 = 19,545.60/x
  3. Step 3: Cross multiply
    56,959.81x = 85,442.07 × 19,545.60
  4. Step 4: Simplify right side
    56,959.81x = 1,670,016,917.10
  5. Step 5: Solve for x
    x = 1,670,016,917.10/56,959.81
  6. Step 6: Final answer
    x = 29,319.22

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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.