Home / 78,889,559.56-118,334,340.36-21,381,830.72

Finding the Fourth Proportional to 78,889,559.56, 118,334,340.36 and 21,381,830.72

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Solution

The fourth proportional to 78,889,559.56, 118,334,340.36 and 21,381,830.72 is: 32,072,746.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,889,559.56 : 118,334,340.36 = 21,381,830.72 : x
  2. Step 2: Convert to fraction form
    78,889,559.56/118,334,340.36 = 21,381,830.72/x
  3. Step 3: Cross multiply
    78,889,559.56x = 118,334,340.36 × 21,381,830.72
  4. Step 4: Simplify right side
    78,889,559.56x = 2,530,204,833,940,383.50
  5. Step 5: Solve for x
    x = 2,530,204,833,940,383.50/78,889,559.56
  6. Step 6: Final answer
    x = 32,072,746.36

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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.