Home / 315,039,335.70-472,559,003.55-85,008,051.30

Finding the Fourth Proportional to 315,039,335.70, 472,559,003.55 and 85,008,051.30

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Solution

The fourth proportional to 315,039,335.70, 472,559,003.55 and 85,008,051.30 is: 127,512,076.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,039,335.70 : 472,559,003.55 = 85,008,051.30 : x
  2. Step 2: Convert to fraction form
    315,039,335.70/472,559,003.55 = 85,008,051.30/x
  3. Step 3: Cross multiply
    315,039,335.70x = 472,559,003.55 × 85,008,051.30
  4. Step 4: Simplify right side
    315,039,335.70x = 40,171,320,016,055,280
  5. Step 5: Solve for x
    x = 40,171,320,016,055,280/315,039,335.70
  6. Step 6: Final answer
    x = 127,512,076.95

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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.