Home / 85,629.16-128,396.58-26,448.40

Finding the Fourth Proportional to 85,629.16, 128,396.58 and 26,448.40

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Solution

The fourth proportional to 85,629.16, 128,396.58 and 26,448.40 is: 39,658.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,629.16 : 128,396.58 = 26,448.40 : x
  2. Step 2: Convert to fraction form
    85,629.16/128,396.58 = 26,448.40/x
  3. Step 3: Cross multiply
    85,629.16x = 128,396.58 × 26,448.40
  4. Step 4: Simplify right side
    85,629.16x = 3,395,884,106.47
  5. Step 5: Solve for x
    x = 3,395,884,106.47/85,629.16
  6. Step 6: Final answer
    x = 39,658.03

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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.