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Finding the Fourth Proportional to 66,692.40, 92,043.45 and 38,403.60

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Solution

The fourth proportional to 66,692.40, 92,043.45 and 38,403.60 is: 53,001.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,692.40 : 92,043.45 = 38,403.60 : x
  2. Step 2: Convert to fraction form
    66,692.40/92,043.45 = 38,403.60/x
  3. Step 3: Cross multiply
    66,692.40x = 92,043.45 × 38,403.60
  4. Step 4: Simplify right side
    66,692.40x = 3,534,799,836.42
  5. Step 5: Solve for x
    x = 3,534,799,836.42/66,692.40
  6. Step 6: Final answer
    x = 53,001.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.