Home / 78,637.96-117,975.57-34,272.64

Finding the Fourth Proportional to 78,637.96, 117,975.57 and 34,272.64

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Solution

The fourth proportional to 78,637.96, 117,975.57 and 34,272.64 is: 51,417.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,637.96 : 117,975.57 = 34,272.64 : x
  2. Step 2: Convert to fraction form
    78,637.96/117,975.57 = 34,272.64/x
  3. Step 3: Cross multiply
    78,637.96x = 117,975.57 × 34,272.64
  4. Step 4: Simplify right side
    78,637.96x = 4,043,334,239.40
  5. Step 5: Solve for x
    x = 4,043,334,239.40/78,637.96
  6. Step 6: Final answer
    x = 51,417.08

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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.