Home / 78,059,378.02-117,078,438.03-20,546,833.06

Finding the Fourth Proportional to 78,059,378.02, 117,078,438.03 and 20,546,833.06

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Solution

The fourth proportional to 78,059,378.02, 117,078,438.03 and 20,546,833.06 is: 30,817,451.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,059,378.02 : 117,078,438.03 = 20,546,833.06 : x
  2. Step 2: Convert to fraction form
    78,059,378.02/117,078,438.03 = 20,546,833.06/x
  3. Step 3: Cross multiply
    78,059,378.02x = 117,078,438.03 × 20,546,833.06
  4. Step 4: Simplify right side
    78,059,378.02x = 2,405,591,121,127,965
  5. Step 5: Solve for x
    x = 2,405,591,121,127,965/78,059,378.02
  6. Step 6: Final answer
    x = 30,817,451.82

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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.