Home / 85,671.06-128,515.19-29,503.77

Finding the Fourth Proportional to 85,671.06, 128,515.19 and 29,503.77

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Solution

The fourth proportional to 85,671.06, 128,515.19 and 29,503.77 is: 44,258.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,671.06 : 128,515.19 = 29,503.77 : x
  2. Step 2: Convert to fraction form
    85,671.06/128,515.19 = 29,503.77/x
  3. Step 3: Cross multiply
    85,671.06x = 128,515.19 × 29,503.77
  4. Step 4: Simplify right side
    85,671.06x = 3,791,682,607.27
  5. Step 5: Solve for x
    x = 3,791,682,607.27/85,671.06
  6. Step 6: Final answer
    x = 44,258.62

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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.