Home / 79,151.28-118,712.04-39,697.80

Finding the Fourth Proportional to 79,151.28, 118,712.04 and 39,697.80

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Solution

The fourth proportional to 79,151.28, 118,712.04 and 39,697.80 is: 59,539.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,151.28 : 118,712.04 = 39,697.80 : x
  2. Step 2: Convert to fraction form
    79,151.28/118,712.04 = 39,697.80/x
  3. Step 3: Cross multiply
    79,151.28x = 118,712.04 × 39,697.80
  4. Step 4: Simplify right side
    79,151.28x = 4,712,606,821.51
  5. Step 5: Solve for x
    x = 4,712,606,821.51/79,151.28
  6. Step 6: Final answer
    x = 59,539.24

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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.