Home / 85,652.03-128,508.47-38,262.78

Finding the Fourth Proportional to 85,652.03, 128,508.47 and 38,262.78

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Solution

The fourth proportional to 85,652.03, 128,508.47 and 38,262.78 is: 57,407.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,652.03 : 128,508.47 = 38,262.78 : x
  2. Step 2: Convert to fraction form
    85,652.03/128,508.47 = 38,262.78/x
  3. Step 3: Cross multiply
    85,652.03x = 128,508.47 × 38,262.78
  4. Step 4: Simplify right side
    85,652.03x = 4,917,091,483.15
  5. Step 5: Solve for x
    x = 4,917,091,483.15/85,652.03
  6. Step 6: Final answer
    x = 57,407.76

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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.