Home / 85,821.10-128,714.05-32,494.68

Finding the Fourth Proportional to 85,821.10, 128,714.05 and 32,494.68

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Solution

The fourth proportional to 85,821.10, 128,714.05 and 32,494.68 is: 48,735.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,821.10 : 128,714.05 = 32,494.68 : x
  2. Step 2: Convert to fraction form
    85,821.10/128,714.05 = 32,494.68/x
  3. Step 3: Cross multiply
    85,821.10x = 128,714.05 × 32,494.68
  4. Step 4: Simplify right side
    85,821.10x = 4,182,521,785.02
  5. Step 5: Solve for x
    x = 4,182,521,785.02/85,821.10
  6. Step 6: Final answer
    x = 48,735.36

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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.