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Finding the Fourth Proportional to 55,585, 83,386.14 and 18,657.64

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Solution

The fourth proportional to 55,585, 83,386.14 and 18,657.64 is: 27,989.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,585 : 83,386.14 = 18,657.64 : x
  2. Step 2: Convert to fraction form
    55,585/83,386.14 = 18,657.64/x
  3. Step 3: Cross multiply
    55,585x = 83,386.14 × 18,657.64
  4. Step 4: Simplify right side
    55,585x = 1,555,788,581.11
  5. Step 5: Solve for x
    x = 1,555,788,581.11/55,585
  6. Step 6: Final answer
    x = 27,989.36

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.