Home / 78,928.67-108,929.07-43,124.06

Finding the Fourth Proportional to 78,928.67, 108,929.07 and 43,124.06

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Solution

The fourth proportional to 78,928.67, 108,929.07 and 43,124.06 is: 59,515.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,928.67 : 108,929.07 = 43,124.06 : x
  2. Step 2: Convert to fraction form
    78,928.67/108,929.07 = 43,124.06/x
  3. Step 3: Cross multiply
    78,928.67x = 108,929.07 × 43,124.06
  4. Step 4: Simplify right side
    78,928.67x = 4,697,463,750.42
  5. Step 5: Solve for x
    x = 4,697,463,750.42/78,928.67
  6. Step 6: Final answer
    x = 59,515.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.