Home / 85,734.36-129,048.60-77,584.08

Finding the Fourth Proportional to 85,734.36, 129,048.60 and 77,584.08

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Solution

The fourth proportional to 85,734.36, 129,048.60 and 77,584.08 is: 116,780.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,734.36 : 129,048.60 = 77,584.08 : x
  2. Step 2: Convert to fraction form
    85,734.36/129,048.60 = 77,584.08/x
  3. Step 3: Cross multiply
    85,734.36x = 129,048.60 × 77,584.08
  4. Step 4: Simplify right side
    85,734.36x = 10,012,116,906.29
  5. Step 5: Solve for x
    x = 10,012,116,906.29/85,734.36
  6. Step 6: Final answer
    x = 116,780.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.