Home / 85,419.93-128,130.07-29,260.50

Finding the Fourth Proportional to 85,419.93, 128,130.07 and 29,260.50

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Solution

The fourth proportional to 85,419.93, 128,130.07 and 29,260.50 is: 43,890.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,419.93 : 128,130.07 = 29,260.50 : x
  2. Step 2: Convert to fraction form
    85,419.93/128,130.07 = 29,260.50/x
  3. Step 3: Cross multiply
    85,419.93x = 128,130.07 × 29,260.50
  4. Step 4: Simplify right side
    85,419.93x = 3,749,150,191.93
  5. Step 5: Solve for x
    x = 3,749,150,191.93/85,419.93
  6. Step 6: Final answer
    x = 43,890.81

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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.