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Finding the Fourth Proportional to 56,185.68, 84,269.88 and 18,746.40

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Solution

The fourth proportional to 56,185.68, 84,269.88 and 18,746.40 is: 28,116.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,185.68 : 84,269.88 = 18,746.40 : x
  2. Step 2: Convert to fraction form
    56,185.68/84,269.88 = 18,746.40/x
  3. Step 3: Cross multiply
    56,185.68x = 84,269.88 × 18,746.40
  4. Step 4: Simplify right side
    56,185.68x = 1,579,756,878.43
  5. Step 5: Solve for x
    x = 1,579,756,878.43/56,185.68
  6. Step 6: Final answer
    x = 28,116.72

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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.