Home / 78,661.03-118,008.63-28,741.05

Finding the Fourth Proportional to 78,661.03, 118,008.63 and 28,741.05

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Solution

The fourth proportional to 78,661.03, 118,008.63 and 28,741.05 is: 43,117.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,661.03 : 118,008.63 = 28,741.05 : x
  2. Step 2: Convert to fraction form
    78,661.03/118,008.63 = 28,741.05/x
  3. Step 3: Cross multiply
    78,661.03x = 118,008.63 × 28,741.05
  4. Step 4: Simplify right side
    78,661.03x = 3,391,691,603.36
  5. Step 5: Solve for x
    x = 3,391,691,603.36/78,661.03
  6. Step 6: Final answer
    x = 43,117.82

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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.