Home / 85,531.30-128,297.02-23,201.80

Finding the Fourth Proportional to 85,531.30, 128,297.02 and 23,201.80

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Solution

The fourth proportional to 85,531.30, 128,297.02 and 23,201.80 is: 34,802.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,531.30 : 128,297.02 = 23,201.80 : x
  2. Step 2: Convert to fraction form
    85,531.30/128,297.02 = 23,201.80/x
  3. Step 3: Cross multiply
    85,531.30x = 128,297.02 × 23,201.80
  4. Step 4: Simplify right side
    85,531.30x = 2,976,721,798.64
  5. Step 5: Solve for x
    x = 2,976,721,798.64/85,531.30
  6. Step 6: Final answer
    x = 34,802.72

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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.