Home / 81,771,261.60-122,656,892.40-61,363,927.20

Finding the Fourth Proportional to 81,771,261.60, 122,656,892.40 and 61,363,927.20

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Solution

The fourth proportional to 81,771,261.60, 122,656,892.40 and 61,363,927.20 is: 92,045,890.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,771,261.60 : 122,656,892.40 = 61,363,927.20 : x
  2. Step 2: Convert to fraction form
    81,771,261.60/122,656,892.40 = 61,363,927.20/x
  3. Step 3: Cross multiply
    81,771,261.60x = 122,656,892.40 × 61,363,927.20
  4. Step 4: Simplify right side
    81,771,261.60x = 7,526,708,615,811,834
  5. Step 5: Solve for x
    x = 7,526,708,615,811,834/81,771,261.60
  6. Step 6: Final answer
    x = 92,045,890.80

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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.