Home / 78,292.18-107,894.06-76,852.68

Finding the Fourth Proportional to 78,292.18, 107,894.06 and 76,852.68

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Solution

The fourth proportional to 78,292.18, 107,894.06 and 76,852.68 is: 105,910.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,292.18 : 107,894.06 = 76,852.68 : x
  2. Step 2: Convert to fraction form
    78,292.18/107,894.06 = 76,852.68/x
  3. Step 3: Cross multiply
    78,292.18x = 107,894.06 × 76,852.68
  4. Step 4: Simplify right side
    78,292.18x = 8,291,947,667.08
  5. Step 5: Solve for x
    x = 8,291,947,667.08/78,292.18
  6. Step 6: Final answer
    x = 105,910.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.