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Finding the Fourth Proportional to 64,830.34, 97,245.48 and 20,461.54

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Solution

The fourth proportional to 64,830.34, 97,245.48 and 20,461.54 is: 30,692.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,830.34 : 97,245.48 = 20,461.54 : x
  2. Step 2: Convert to fraction form
    64,830.34/97,245.48 = 20,461.54/x
  3. Step 3: Cross multiply
    64,830.34x = 97,245.48 × 20,461.54
  4. Step 4: Simplify right side
    64,830.34x = 1,989,792,278.84
  5. Step 5: Solve for x
    x = 1,989,792,278.84/64,830.34
  6. Step 6: Final answer
    x = 30,692.30

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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.