Home / 78,005,321.30-117,007,981.95-39,741,569.30

Finding the Fourth Proportional to 78,005,321.30, 117,007,981.95 and 39,741,569.30

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Solution

The fourth proportional to 78,005,321.30, 117,007,981.95 and 39,741,569.30 is: 59,612,353.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,005,321.30 : 117,007,981.95 = 39,741,569.30 : x
  2. Step 2: Convert to fraction form
    78,005,321.30/117,007,981.95 = 39,741,569.30/x
  3. Step 3: Cross multiply
    78,005,321.30x = 117,007,981.95 × 39,741,569.30
  4. Step 4: Simplify right side
    78,005,321.30x = 4,650,080,823,319,074
  5. Step 5: Solve for x
    x = 4,650,080,823,319,074/78,005,321.30
  6. Step 6: Final answer
    x = 59,612,353.95

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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.