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Finding the Fourth Proportional to 65,656,692.40, 98,485,038.60 and 20,232,410.80

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Solution

The fourth proportional to 65,656,692.40, 98,485,038.60 and 20,232,410.80 is: 30,348,616.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,656,692.40 : 98,485,038.60 = 20,232,410.80 : x
  2. Step 2: Convert to fraction form
    65,656,692.40/98,485,038.60 = 20,232,410.80/x
  3. Step 3: Cross multiply
    65,656,692.40x = 98,485,038.60 × 20,232,410.80
  4. Step 4: Simplify right side
    65,656,692.40x = 1,992,589,758,609,056.75
  5. Step 5: Solve for x
    x = 1,992,589,758,609,056.75/65,656,692.40
  6. Step 6: Final answer
    x = 30,348,616.20

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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.