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Finding the Fourth Proportional to 56,070.59, 84,120.03 and 18,630.86

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Solution

The fourth proportional to 56,070.59, 84,120.03 and 18,630.86 is: 27,950.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,070.59 : 84,120.03 = 18,630.86 : x
  2. Step 2: Convert to fraction form
    56,070.59/84,120.03 = 18,630.86/x
  3. Step 3: Cross multiply
    56,070.59x = 84,120.03 × 18,630.86
  4. Step 4: Simplify right side
    56,070.59x = 1,567,228,081.53
  5. Step 5: Solve for x
    x = 1,567,228,081.53/56,070.59
  6. Step 6: Final answer
    x = 27,950.99

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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.