Home / 78,704.10-118,026.99-31,941.18

Finding the Fourth Proportional to 78,704.10, 118,026.99 and 31,941.18

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Solution

The fourth proportional to 78,704.10, 118,026.99 and 31,941.18 is: 47,899.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,704.10 : 118,026.99 = 31,941.18 : x
  2. Step 2: Convert to fraction form
    78,704.10/118,026.99 = 31,941.18/x
  3. Step 3: Cross multiply
    78,704.10x = 118,026.99 × 31,941.18
  4. Step 4: Simplify right side
    78,704.10x = 3,769,921,332.45
  5. Step 5: Solve for x
    x = 3,769,921,332.45/78,704.10
  6. Step 6: Final answer
    x = 47,899.94

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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.