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Finding the Fourth Proportional to 61,128,031.20, 91,692,046.80 and 61,128,031.20

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Solution

The fourth proportional to 61,128,031.20, 91,692,046.80 and 61,128,031.20 is: 91,692,046.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,128,031.20 : 91,692,046.80 = 61,128,031.20 : x
  2. Step 2: Convert to fraction form
    61,128,031.20/91,692,046.80 = 61,128,031.20/x
  3. Step 3: Cross multiply
    61,128,031.20x = 91,692,046.80 × 61,128,031.20
  4. Step 4: Simplify right side
    61,128,031.20x = 5,604,954,297,582,260
  5. Step 5: Solve for x
    x = 5,604,954,297,582,260/61,128,031.20
  6. Step 6: Final answer
    x = 91,692,046.80

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.