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Finding the Fourth Proportional to 57,875.51, 86,829.71 and 18,435.67

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Solution

The fourth proportional to 57,875.51, 86,829.71 and 18,435.67 is: 27,658.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,875.51 : 86,829.71 = 18,435.67 : x
  2. Step 2: Convert to fraction form
    57,875.51/86,829.71 = 18,435.67/x
  3. Step 3: Cross multiply
    57,875.51x = 86,829.71 × 18,435.67
  4. Step 4: Simplify right side
    57,875.51x = 1,600,763,570.50
  5. Step 5: Solve for x
    x = 1,600,763,570.50/57,875.51
  6. Step 6: Final answer
    x = 27,658.74

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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.