Home / 78,910.86-118,366.73-26,320.20

Finding the Fourth Proportional to 78,910.86, 118,366.73 and 26,320.20

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Solution

The fourth proportional to 78,910.86, 118,366.73 and 26,320.20 is: 39,480.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,910.86 : 118,366.73 = 26,320.20 : x
  2. Step 2: Convert to fraction form
    78,910.86/118,366.73 = 26,320.20/x
  3. Step 3: Cross multiply
    78,910.86x = 118,366.73 × 26,320.20
  4. Step 4: Simplify right side
    78,910.86x = 3,115,435,283.51
  5. Step 5: Solve for x
    x = 3,115,435,283.51/78,910.86
  6. Step 6: Final answer
    x = 39,480.44

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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.