Home / 103,422.39-142,722.91-57,482.03

Finding the Fourth Proportional to 103,422.39, 142,722.91 and 57,482.03

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Solution

The fourth proportional to 103,422.39, 142,722.91 and 57,482.03 is: 79,325.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,422.39 : 142,722.91 = 57,482.03 : x
  2. Step 2: Convert to fraction form
    103,422.39/142,722.91 = 57,482.03/x
  3. Step 3: Cross multiply
    103,422.39x = 142,722.91 × 57,482.03
  4. Step 4: Simplify right side
    103,422.39x = 8,204,001,880.69
  5. Step 5: Solve for x
    x = 8,204,001,880.69/103,422.39
  6. Step 6: Final answer
    x = 79,325.20

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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.