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Finding the Fourth Proportional to 79,703.87, 118,972.71 and 70,245.66

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Solution

The fourth proportional to 79,703.87, 118,972.71 and 70,245.66 is: 104,854.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,703.87 : 118,972.71 = 70,245.66 : x
  2. Step 2: Convert to fraction form
    79,703.87/118,972.71 = 70,245.66/x
  3. Step 3: Cross multiply
    79,703.87x = 118,972.71 × 70,245.66
  4. Step 4: Simplify right side
    79,703.87x = 8,357,316,535.94
  5. Step 5: Solve for x
    x = 8,357,316,535.94/79,703.87
  6. Step 6: Final answer
    x = 104,854.60

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.