Home / 78,894.24-118,341.36-19,729.91

Finding the Fourth Proportional to 78,894.24, 118,341.36 and 19,729.91

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Solution

The fourth proportional to 78,894.24, 118,341.36 and 19,729.91 is: 29,594.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,894.24 : 118,341.36 = 19,729.91 : x
  2. Step 2: Convert to fraction form
    78,894.24/118,341.36 = 19,729.91/x
  3. Step 3: Cross multiply
    78,894.24x = 118,341.36 × 19,729.91
  4. Step 4: Simplify right side
    78,894.24x = 2,334,863,790.37
  5. Step 5: Solve for x
    x = 2,334,863,790.37/78,894.24
  6. Step 6: Final answer
    x = 29,594.86

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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.