Home / 78,005,328.30-117,007,992.45-39,741,576.30

Finding the Fourth Proportional to 78,005,328.30, 117,007,992.45 and 39,741,576.30

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Solution

The fourth proportional to 78,005,328.30, 117,007,992.45 and 39,741,576.30 is: 59,612,364.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,005,328.30 : 117,007,992.45 = 39,741,576.30 : x
  2. Step 2: Convert to fraction form
    78,005,328.30/117,007,992.45 = 39,741,576.30/x
  3. Step 3: Cross multiply
    78,005,328.30x = 117,007,992.45 × 39,741,576.30
  4. Step 4: Simplify right side
    78,005,328.30x = 4,650,082,059,661,499
  5. Step 5: Solve for x
    x = 4,650,082,059,661,499/78,005,328.30
  6. Step 6: Final answer
    x = 59,612,364.45

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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.