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Finding the Fourth Proportional to 92,649,848.80, 138,880,294.80 and 54,291,618.40

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Solution

The fourth proportional to 92,649,848.80, 138,880,294.80 and 54,291,618.40 is: 81,382,064.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,649,848.80 : 138,880,294.80 = 54,291,618.40 : x
  2. Step 2: Convert to fraction form
    92,649,848.80/138,880,294.80 = 54,291,618.40/x
  3. Step 3: Cross multiply
    92,649,848.80x = 138,880,294.80 × 54,291,618.40
  4. Step 4: Simplify right side
    92,649,848.80x = 7,540,035,968,561,105
  5. Step 5: Solve for x
    x = 7,540,035,968,561,105/92,649,848.80
  6. Step 6: Final answer
    x = 81,382,064.47

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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.