Home / 85,588.02-128,425.77-38,834.82

Finding the Fourth Proportional to 85,588.02, 128,425.77 and 38,834.82

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Solution

The fourth proportional to 85,588.02, 128,425.77 and 38,834.82 is: 58,272.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,588.02 : 128,425.77 = 38,834.82 : x
  2. Step 2: Convert to fraction form
    85,588.02/128,425.77 = 38,834.82/x
  3. Step 3: Cross multiply
    85,588.02x = 128,425.77 × 38,834.82
  4. Step 4: Simplify right side
    85,588.02x = 4,987,391,661.31
  5. Step 5: Solve for x
    x = 4,987,391,661.31/85,588.02
  6. Step 6: Final answer
    x = 58,272.08

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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.