Home / 85,531.02-128,281.41-23,206.38

Finding the Fourth Proportional to 85,531.02, 128,281.41 and 23,206.38

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Solution

The fourth proportional to 85,531.02, 128,281.41 and 23,206.38 is: 34,805.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,531.02 : 128,281.41 = 23,206.38 : x
  2. Step 2: Convert to fraction form
    85,531.02/128,281.41 = 23,206.38/x
  3. Step 3: Cross multiply
    85,531.02x = 128,281.41 × 23,206.38
  4. Step 4: Simplify right side
    85,531.02x = 2,976,947,147.40
  5. Step 5: Solve for x
    x = 2,976,947,147.40/85,531.02
  6. Step 6: Final answer
    x = 34,805.47

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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.