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Finding the Fourth Proportional to 79,281.63, 118,922.45 and 26,686.71

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Solution

The fourth proportional to 79,281.63, 118,922.45 and 26,686.71 is: 40,030.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,281.63 : 118,922.45 = 26,686.71 : x
  2. Step 2: Convert to fraction form
    79,281.63/118,922.45 = 26,686.71/x
  3. Step 3: Cross multiply
    79,281.63x = 118,922.45 × 26,686.71
  4. Step 4: Simplify right side
    79,281.63x = 3,173,648,802.21
  5. Step 5: Solve for x
    x = 3,173,648,802.21/79,281.63
  6. Step 6: Final answer
    x = 40,030.07

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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.