Home / 85,477.60-128,228.55-26,318.08

Finding the Fourth Proportional to 85,477.60, 128,228.55 and 26,318.08

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Solution

The fourth proportional to 85,477.60, 128,228.55 and 26,318.08 is: 39,480.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,477.60 : 128,228.55 = 26,318.08 : x
  2. Step 2: Convert to fraction form
    85,477.60/128,228.55 = 26,318.08/x
  3. Step 3: Cross multiply
    85,477.60x = 128,228.55 × 26,318.08
  4. Step 4: Simplify right side
    85,477.60x = 3,374,729,237.18
  5. Step 5: Solve for x
    x = 3,374,729,237.18/85,477.60
  6. Step 6: Final answer
    x = 39,480.86

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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.