Home / 78,133,014.90-107,825,540.28-42,852,224.64

Finding the Fourth Proportional to 78,133,014.90, 107,825,540.28 and 42,852,224.64

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Solution

The fourth proportional to 78,133,014.90, 107,825,540.28 and 42,852,224.64 is: 59,137,155.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,133,014.90 : 107,825,540.28 = 42,852,224.64 : x
  2. Step 2: Convert to fraction form
    78,133,014.90/107,825,540.28 = 42,852,224.64/x
  3. Step 3: Cross multiply
    78,133,014.90x = 107,825,540.28 × 42,852,224.64
  4. Step 4: Simplify right side
    78,133,014.90x = 4,620,564,274,007,929
  5. Step 5: Solve for x
    x = 4,620,564,274,007,929/78,133,014.90
  6. Step 6: Final answer
    x = 59,137,155.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.