Home / 77,727.73-115,985.37-69,350.15

Finding the Fourth Proportional to 77,727.73, 115,985.37 and 69,350.15

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Solution

The fourth proportional to 77,727.73, 115,985.37 and 69,350.15 is: 103,484.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,727.73 : 115,985.37 = 69,350.15 : x
  2. Step 2: Convert to fraction form
    77,727.73/115,985.37 = 69,350.15/x
  3. Step 3: Cross multiply
    77,727.73x = 115,985.37 × 69,350.15
  4. Step 4: Simplify right side
    77,727.73x = 8,043,602,807.31
  5. Step 5: Solve for x
    x = 8,043,602,807.31/77,727.73
  6. Step 6: Final answer
    x = 103,484.34

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.