Home / 85,661.40-128,497.14-33,071.16

Finding the Fourth Proportional to 85,661.40, 128,497.14 and 33,071.16

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Solution

The fourth proportional to 85,661.40, 128,497.14 and 33,071.16 is: 49,608.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,661.40 : 128,497.14 = 33,071.16 : x
  2. Step 2: Convert to fraction form
    85,661.40/128,497.14 = 33,071.16/x
  3. Step 3: Cross multiply
    85,661.40x = 128,497.14 × 33,071.16
  4. Step 4: Simplify right side
    85,661.40x = 4,249,549,476.48
  5. Step 5: Solve for x
    x = 4,249,549,476.48/85,661.40
  6. Step 6: Final answer
    x = 49,608.69

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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.