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Finding the Fourth Proportional to 79,018.81, 118,526.96 and 19,854.52

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Solution

The fourth proportional to 79,018.81, 118,526.96 and 19,854.52 is: 29,781.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,018.81 : 118,526.96 = 19,854.52 : x
  2. Step 2: Convert to fraction form
    79,018.81/118,526.96 = 19,854.52/x
  3. Step 3: Cross multiply
    79,018.81x = 118,526.96 × 19,854.52
  4. Step 4: Simplify right side
    79,018.81x = 2,353,295,651.18
  5. Step 5: Solve for x
    x = 2,353,295,651.18/79,018.81
  6. Step 6: Final answer
    x = 29,781.46

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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.