Home / 85,577.82-128,397.36-38,188.74

Finding the Fourth Proportional to 85,577.82, 128,397.36 and 38,188.74

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Solution

The fourth proportional to 85,577.82, 128,397.36 and 38,188.74 is: 57,296.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,577.82 : 128,397.36 = 38,188.74 : x
  2. Step 2: Convert to fraction form
    85,577.82/128,397.36 = 38,188.74/x
  3. Step 3: Cross multiply
    85,577.82x = 128,397.36 × 38,188.74
  4. Step 4: Simplify right side
    85,577.82x = 4,903,333,397.73
  5. Step 5: Solve for x
    x = 4,903,333,397.73/85,577.82
  6. Step 6: Final answer
    x = 57,296.78

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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.