Home / 78,273,430.37-117,308,009.23-43,728,436.76

Finding the Fourth Proportional to 78,273,430.37, 117,308,009.23 and 43,728,436.76

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Solution

The fourth proportional to 78,273,430.37, 117,308,009.23 and 43,728,436.76 is: 65,535,595.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,273,430.37 : 117,308,009.23 = 43,728,436.76 : x
  2. Step 2: Convert to fraction form
    78,273,430.37/117,308,009.23 = 43,728,436.76/x
  3. Step 3: Cross multiply
    78,273,430.37x = 117,308,009.23 × 43,728,436.76
  4. Step 4: Simplify right side
    78,273,430.37x = 5,129,695,863,458,143
  5. Step 5: Solve for x
    x = 5,129,695,863,458,143/78,273,430.37
  6. Step 6: Final answer
    x = 65,535,595.41

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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.