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Finding the Fourth Proportional to 65,117.18, 97,678.74 and 20,739.76

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Solution

The fourth proportional to 65,117.18, 97,678.74 and 20,739.76 is: 31,110.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,117.18 : 97,678.74 = 20,739.76 : x
  2. Step 2: Convert to fraction form
    65,117.18/97,678.74 = 20,739.76/x
  3. Step 3: Cross multiply
    65,117.18x = 97,678.74 × 20,739.76
  4. Step 4: Simplify right side
    65,117.18x = 2,025,833,624.70
  5. Step 5: Solve for x
    x = 2,025,833,624.70/65,117.18
  6. Step 6: Final answer
    x = 31,110.59

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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.