Home / 85,550.37-128,279.38-60,639.22

Finding the Fourth Proportional to 85,550.37, 128,279.38 and 60,639.22

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Solution

The fourth proportional to 85,550.37, 128,279.38 and 60,639.22 is: 90,926.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,550.37 : 128,279.38 = 60,639.22 : x
  2. Step 2: Convert to fraction form
    85,550.37/128,279.38 = 60,639.22/x
  3. Step 3: Cross multiply
    85,550.37x = 128,279.38 × 60,639.22
  4. Step 4: Simplify right side
    85,550.37x = 7,778,761,545.28
  5. Step 5: Solve for x
    x = 7,778,761,545.28/85,550.37
  6. Step 6: Final answer
    x = 90,926.10

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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.