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Finding the Fourth Proportional to 65,495.40, 98,242.68 and 18,748.40

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Solution

The fourth proportional to 65,495.40, 98,242.68 and 18,748.40 is: 28,122.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,495.40 : 98,242.68 = 18,748.40 : x
  2. Step 2: Convert to fraction form
    65,495.40/98,242.68 = 18,748.40/x
  3. Step 3: Cross multiply
    65,495.40x = 98,242.68 × 18,748.40
  4. Step 4: Simplify right side
    65,495.40x = 1,841,893,061.71
  5. Step 5: Solve for x
    x = 1,841,893,061.71/65,495.40
  6. Step 6: Final answer
    x = 28,122.48

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1.5x scale

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.