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Finding the Fourth Proportional to 65,607, 98,427.18 and 18,859.92

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Solution

The fourth proportional to 65,607, 98,427.18 and 18,859.92 is: 28,294.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,607 : 98,427.18 = 18,859.92 : x
  2. Step 2: Convert to fraction form
    65,607/98,427.18 = 18,859.92/x
  3. Step 3: Cross multiply
    65,607x = 98,427.18 × 18,859.92
  4. Step 4: Simplify right side
    65,607x = 1,856,328,740.63
  5. Step 5: Solve for x
    x = 1,856,328,740.63/65,607
  6. Step 6: Final answer
    x = 28,294.67

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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.