Home / 78,911.43-118,367.46-19,746.93

Finding the Fourth Proportional to 78,911.43, 118,367.46 and 19,746.93

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Solution

The fourth proportional to 78,911.43, 118,367.46 and 19,746.93 is: 29,620.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,911.43 : 118,367.46 = 19,746.93 : x
  2. Step 2: Convert to fraction form
    78,911.43/118,367.46 = 19,746.93/x
  3. Step 3: Cross multiply
    78,911.43x = 118,367.46 × 19,746.93
  4. Step 4: Simplify right side
    78,911.43x = 2,337,393,946.90
  5. Step 5: Solve for x
    x = 2,337,393,946.90/78,911.43
  6. Step 6: Final answer
    x = 29,620.47

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1.5x scale

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.