Home / 68,293,670.40-102,405,484.80-20,418,393.60

Finding the Fourth Proportional to 68,293,670.40, 102,405,484.80 and 20,418,393.60

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Solution

The fourth proportional to 68,293,670.40, 102,405,484.80 and 20,418,393.60 is: 30,617,119.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,293,670.40 : 102,405,484.80 = 20,418,393.60 : x
  2. Step 2: Convert to fraction form
    68,293,670.40/102,405,484.80 = 20,418,393.60/x
  3. Step 3: Cross multiply
    68,293,670.40x = 102,405,484.80 × 20,418,393.60
  4. Step 4: Simplify right side
    68,293,670.40x = 2,090,955,495,445,217.25
  5. Step 5: Solve for x
    x = 2,090,955,495,445,217.25/68,293,670.40
  6. Step 6: Final answer
    x = 30,617,119.91

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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.