Home / 85,395.35-128,003.72-29,216.58

Finding the Fourth Proportional to 85,395.35, 128,003.72 and 29,216.58

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Solution

The fourth proportional to 85,395.35, 128,003.72 and 29,216.58 is: 43,794.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,395.35 : 128,003.72 = 29,216.58 : x
  2. Step 2: Convert to fraction form
    85,395.35/128,003.72 = 29,216.58/x
  3. Step 3: Cross multiply
    85,395.35x = 128,003.72 × 29,216.58
  4. Step 4: Simplify right side
    85,395.35x = 3,739,830,779.59
  5. Step 5: Solve for x
    x = 3,739,830,779.59/85,395.35
  6. Step 6: Final answer
    x = 43,794.32

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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.