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Finding the Fourth Proportional to 65,893,460.20, 98,858,852.70 and 20,459,847.40

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Solution

The fourth proportional to 65,893,460.20, 98,858,852.70 and 20,459,847.40 is: 30,695,565.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,893,460.20 : 98,858,852.70 = 20,459,847.40 : x
  2. Step 2: Convert to fraction form
    65,893,460.20/98,858,852.70 = 20,459,847.40/x
  3. Step 3: Cross multiply
    65,893,460.20x = 98,858,852.70 × 20,459,847.40
  4. Step 4: Simplify right side
    65,893,460.20x = 2,022,637,040,381,078
  5. Step 5: Solve for x
    x = 2,022,637,040,381,078/65,893,460.20
  6. Step 6: Final answer
    x = 30,695,565.75

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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.