Home / 78,698.21-108,600.37-42,887.45

Finding the Fourth Proportional to 78,698.21, 108,600.37 and 42,887.45

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Solution

The fourth proportional to 78,698.21, 108,600.37 and 42,887.45 is: 59,182.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,698.21 : 108,600.37 = 42,887.45 : x
  2. Step 2: Convert to fraction form
    78,698.21/108,600.37 = 42,887.45/x
  3. Step 3: Cross multiply
    78,698.21x = 108,600.37 × 42,887.45
  4. Step 4: Simplify right side
    78,698.21x = 4,657,593,102.64
  5. Step 5: Solve for x
    x = 4,657,593,102.64/78,698.21
  6. Step 6: Final answer
    x = 59,182.96

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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.