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Finding the Fourth Proportional to 108,695.40, 163,071.90 and 38,567.40

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Solution

The fourth proportional to 108,695.40, 163,071.90 and 38,567.40 is: 57,861.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,695.40 : 163,071.90 = 38,567.40 : x
  2. Step 2: Convert to fraction form
    108,695.40/163,071.90 = 38,567.40/x
  3. Step 3: Cross multiply
    108,695.40x = 163,071.90 × 38,567.40
  4. Step 4: Simplify right side
    108,695.40x = 6,289,259,196.06
  5. Step 5: Solve for x
    x = 6,289,259,196.06/108,695.40
  6. Step 6: Final answer
    x = 57,861.32

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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.