Home / 85,947.16-128,889.74-29,772.04

Finding the Fourth Proportional to 85,947.16, 128,889.74 and 29,772.04

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Solution

The fourth proportional to 85,947.16, 128,889.74 and 29,772.04 is: 44,647.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,947.16 : 128,889.74 = 29,772.04 : x
  2. Step 2: Convert to fraction form
    85,947.16/128,889.74 = 29,772.04/x
  3. Step 3: Cross multiply
    85,947.16x = 128,889.74 × 29,772.04
  4. Step 4: Simplify right side
    85,947.16x = 3,837,310,494.87
  5. Step 5: Solve for x
    x = 3,837,310,494.87/85,947.16
  6. Step 6: Final answer
    x = 44,647.32

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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.