Home / 78,727.36-108,639.48-45,193.36

Finding the Fourth Proportional to 78,727.36, 108,639.48 and 45,193.36

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Solution

The fourth proportional to 78,727.36, 108,639.48 and 45,193.36 is: 62,364.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,727.36 : 108,639.48 = 45,193.36 : x
  2. Step 2: Convert to fraction form
    78,727.36/108,639.48 = 45,193.36/x
  3. Step 3: Cross multiply
    78,727.36x = 108,639.48 × 45,193.36
  4. Step 4: Simplify right side
    78,727.36x = 4,909,783,129.85
  5. Step 5: Solve for x
    x = 4,909,783,129.85/78,727.36
  6. Step 6: Final answer
    x = 62,364.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.