Home / 79,140.81-118,720.59-49,561.09

Finding the Fourth Proportional to 79,140.81, 118,720.59 and 49,561.09

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Solution

The fourth proportional to 79,140.81, 118,720.59 and 49,561.09 is: 74,347.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,140.81 : 118,720.59 = 49,561.09 : x
  2. Step 2: Convert to fraction form
    79,140.81/118,720.59 = 49,561.09/x
  3. Step 3: Cross multiply
    79,140.81x = 118,720.59 × 49,561.09
  4. Step 4: Simplify right side
    79,140.81x = 5,883,921,598.04
  5. Step 5: Solve for x
    x = 5,883,921,598.04/79,140.81
  6. Step 6: Final answer
    x = 74,347.51

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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.