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Finding the Fourth Proportional to 65,903.40, 98,768.70 and 26,428.20

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Solution

The fourth proportional to 65,903.40, 98,768.70 and 26,428.20 is: 39,607.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,903.40 : 98,768.70 = 26,428.20 : x
  2. Step 2: Convert to fraction form
    65,903.40/98,768.70 = 26,428.20/x
  3. Step 3: Cross multiply
    65,903.40x = 98,768.70 × 26,428.20
  4. Step 4: Simplify right side
    65,903.40x = 2,610,278,957.34
  5. Step 5: Solve for x
    x = 2,610,278,957.34/65,903.40
  6. Step 6: Final answer
    x = 39,607.65

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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.