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Finding the Fourth Proportional to 65,492.39, 98,238.18 and 18,745.40

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Solution

The fourth proportional to 65,492.39, 98,238.18 and 18,745.40 is: 28,117.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,492.39 : 98,238.18 = 18,745.40 : x
  2. Step 2: Convert to fraction form
    65,492.39/98,238.18 = 18,745.40/x
  3. Step 3: Cross multiply
    65,492.39x = 98,238.18 × 18,745.40
  4. Step 4: Simplify right side
    65,492.39x = 1,841,513,979.37
  5. Step 5: Solve for x
    x = 1,841,513,979.37/65,492.39
  6. Step 6: Final answer
    x = 28,117.98

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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.