Home / 85,916.61-128,867.36-23,587.11

Finding the Fourth Proportional to 85,916.61, 128,867.36 and 23,587.11

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Solution

The fourth proportional to 85,916.61, 128,867.36 and 23,587.11 is: 35,378.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,916.61 : 128,867.36 = 23,587.11 : x
  2. Step 2: Convert to fraction form
    85,916.61/128,867.36 = 23,587.11/x
  3. Step 3: Cross multiply
    85,916.61x = 128,867.36 × 23,587.11
  4. Step 4: Simplify right side
    85,916.61x = 3,039,608,477.79
  5. Step 5: Solve for x
    x = 3,039,608,477.79/85,916.61
  6. Step 6: Final answer
    x = 35,378.59

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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.