Home / 85,414.19-128,009.79-61,801.26

Finding the Fourth Proportional to 85,414.19, 128,009.79 and 61,801.26

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Solution

The fourth proportional to 85,414.19, 128,009.79 and 61,801.26 is: 92,621.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,414.19 : 128,009.79 = 61,801.26 : x
  2. Step 2: Convert to fraction form
    85,414.19/128,009.79 = 61,801.26/x
  3. Step 3: Cross multiply
    85,414.19x = 128,009.79 × 61,801.26
  4. Step 4: Simplify right side
    85,414.19x = 7,911,166,314.34
  5. Step 5: Solve for x
    x = 7,911,166,314.34/85,414.19
  6. Step 6: Final answer
    x = 92,621.22

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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.