Home / 78,271.16-117,407.86-19,107.96

Finding the Fourth Proportional to 78,271.16, 117,407.86 and 19,107.96

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Solution

The fourth proportional to 78,271.16, 117,407.86 and 19,107.96 is: 28,662.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,271.16 : 117,407.86 = 19,107.96 : x
  2. Step 2: Convert to fraction form
    78,271.16/117,407.86 = 19,107.96/x
  3. Step 3: Cross multiply
    78,271.16x = 117,407.86 × 19,107.96
  4. Step 4: Simplify right side
    78,271.16x = 2,243,424,692.57
  5. Step 5: Solve for x
    x = 2,243,424,692.57/78,271.16
  6. Step 6: Final answer
    x = 28,662.21

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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.