Home / 78,604,669.52-117,890,742.72-21,083,255.04

Finding the Fourth Proportional to 78,604,669.52, 117,890,742.72 and 21,083,255.04

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Solution

The fourth proportional to 78,604,669.52, 117,890,742.72 and 21,083,255.04 is: 31,620,520.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,604,669.52 : 117,890,742.72 = 21,083,255.04 : x
  2. Step 2: Convert to fraction form
    78,604,669.52/117,890,742.72 = 21,083,255.04/x
  3. Step 3: Cross multiply
    78,604,669.52x = 117,890,742.72 × 21,083,255.04
  4. Step 4: Simplify right side
    78,604,669.52x = 2,485,520,595,620,783
  5. Step 5: Solve for x
    x = 2,485,520,595,620,783/78,604,669.52
  6. Step 6: Final answer
    x = 31,620,520.90

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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.