Home / 78,033.12-107,685.36-42,223.77

Finding the Fourth Proportional to 78,033.12, 107,685.36 and 42,223.77

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Solution

The fourth proportional to 78,033.12, 107,685.36 and 42,223.77 is: 58,268.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,033.12 : 107,685.36 = 42,223.77 : x
  2. Step 2: Convert to fraction form
    78,033.12/107,685.36 = 42,223.77/x
  3. Step 3: Cross multiply
    78,033.12x = 107,685.36 × 42,223.77
  4. Step 4: Simplify right side
    78,033.12x = 4,546,881,334.58
  5. Step 5: Solve for x
    x = 4,546,881,334.58/78,033.12
  6. Step 6: Final answer
    x = 58,268.61

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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.