Home / 78,458.52-117,525.24-38,356.77

Finding the Fourth Proportional to 78,458.52, 117,525.24 and 38,356.77

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Solution

The fourth proportional to 78,458.52, 117,525.24 and 38,356.77 is: 57,455.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,458.52 : 117,525.24 = 38,356.77 : x
  2. Step 2: Convert to fraction form
    78,458.52/117,525.24 = 38,356.77/x
  3. Step 3: Cross multiply
    78,458.52x = 117,525.24 × 38,356.77
  4. Step 4: Simplify right side
    78,458.52x = 4,507,888,599.87
  5. Step 5: Solve for x
    x = 4,507,888,599.87/78,458.52
  6. Step 6: Final answer
    x = 57,455.69

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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.