Home / 78,889,558.56-118,334,338.86-21,381,829.72

Finding the Fourth Proportional to 78,889,558.56, 118,334,338.86 and 21,381,829.72

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Solution

The fourth proportional to 78,889,558.56, 118,334,338.86 and 21,381,829.72 is: 32,072,744.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,889,558.56 : 118,334,338.86 = 21,381,829.72 : x
  2. Step 2: Convert to fraction form
    78,889,558.56/118,334,338.86 = 21,381,829.72/x
  3. Step 3: Cross multiply
    78,889,558.56x = 118,334,338.86 × 21,381,829.72
  4. Step 4: Simplify right side
    78,889,558.56x = 2,530,204,683,533,299
  5. Step 5: Solve for x
    x = 2,530,204,683,533,299/78,889,558.56
  6. Step 6: Final answer
    x = 32,072,744.86

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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.