Home / 85,610.40-128,429.28-26,432.16

Finding the Fourth Proportional to 85,610.40, 128,429.28 and 26,432.16

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Solution

The fourth proportional to 85,610.40, 128,429.28 and 26,432.16 is: 39,652.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,610.40 : 128,429.28 = 26,432.16 : x
  2. Step 2: Convert to fraction form
    85,610.40/128,429.28 = 26,432.16/x
  3. Step 3: Cross multiply
    85,610.40x = 128,429.28 × 26,432.16
  4. Step 4: Simplify right side
    85,610.40x = 3,394,663,277.64
  5. Step 5: Solve for x
    x = 3,394,663,277.64/85,610.40
  6. Step 6: Final answer
    x = 39,652.46

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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.