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Finding the Fourth Proportional to 86,692.50, 130,065.33 and 77,751.33

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Solution

The fourth proportional to 86,692.50, 130,065.33 and 77,751.33 is: 116,650.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,692.50 : 130,065.33 = 77,751.33 : x
  2. Step 2: Convert to fraction form
    86,692.50/130,065.33 = 77,751.33/x
  3. Step 3: Cross multiply
    86,692.50x = 130,065.33 × 77,751.33
  4. Step 4: Simplify right side
    86,692.50x = 10,112,752,394.39
  5. Step 5: Solve for x
    x = 10,112,752,394.39/86,692.50
  6. Step 6: Final answer
    x = 116,650.83

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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.