Home / 78,237.10-117,371.98-25,642.45

Finding the Fourth Proportional to 78,237.10, 117,371.98 and 25,642.45

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Solution

The fourth proportional to 78,237.10, 117,371.98 and 25,642.45 is: 38,469.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,237.10 : 117,371.98 = 25,642.45 : x
  2. Step 2: Convert to fraction form
    78,237.10/117,371.98 = 25,642.45/x
  3. Step 3: Cross multiply
    78,237.10x = 117,371.98 × 25,642.45
  4. Step 4: Simplify right side
    78,237.10x = 3,009,704,541.69
  5. Step 5: Solve for x
    x = 3,009,704,541.69/78,237.10
  6. Step 6: Final answer
    x = 38,469.02

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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.