Home / 85,623.80-128,389.02-26,448.44

Finding the Fourth Proportional to 85,623.80, 128,389.02 and 26,448.44

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Solution

The fourth proportional to 85,623.80, 128,389.02 and 26,448.44 is: 39,658.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,623.80 : 128,389.02 = 26,448.44 : x
  2. Step 2: Convert to fraction form
    85,623.80/128,389.02 = 26,448.44/x
  3. Step 3: Cross multiply
    85,623.80x = 128,389.02 × 26,448.44
  4. Step 4: Simplify right side
    85,623.80x = 3,395,689,292.13
  5. Step 5: Solve for x
    x = 3,395,689,292.13/85,623.80
  6. Step 6: Final answer
    x = 39,658.24

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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.