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Finding the Fourth Proportional to 56,840.61, 85,267.51 and 18,893.28

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Solution

The fourth proportional to 56,840.61, 85,267.51 and 18,893.28 is: 28,342.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,840.61 : 85,267.51 = 18,893.28 : x
  2. Step 2: Convert to fraction form
    56,840.61/85,267.51 = 18,893.28/x
  3. Step 3: Cross multiply
    56,840.61x = 85,267.51 × 18,893.28
  4. Step 4: Simplify right side
    56,840.61x = 1,610,982,894.10
  5. Step 5: Solve for x
    x = 1,610,982,894.10/56,840.61
  6. Step 6: Final answer
    x = 28,342.11

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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.