Home / 78,912.12-118,387.86-23,507.64

Finding the Fourth Proportional to 78,912.12, 118,387.86 and 23,507.64

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Solution

The fourth proportional to 78,912.12, 118,387.86 and 23,507.64 is: 35,267.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,912.12 : 118,387.86 = 23,507.64 : x
  2. Step 2: Convert to fraction form
    78,912.12/118,387.86 = 23,507.64/x
  3. Step 3: Cross multiply
    78,912.12x = 118,387.86 × 23,507.64
  4. Step 4: Simplify right side
    78,912.12x = 2,783,019,193.25
  5. Step 5: Solve for x
    x = 2,783,019,193.25/78,912.12
  6. Step 6: Final answer
    x = 35,267.32

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1.5x scale

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.