Home / 78,725.34-118,087.56-19,560.98

Finding the Fourth Proportional to 78,725.34, 118,087.56 and 19,560.98

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Solution

The fourth proportional to 78,725.34, 118,087.56 and 19,560.98 is: 29,341.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,725.34 : 118,087.56 = 19,560.98 : x
  2. Step 2: Convert to fraction form
    78,725.34/118,087.56 = 19,560.98/x
  3. Step 3: Cross multiply
    78,725.34x = 118,087.56 × 19,560.98
  4. Step 4: Simplify right side
    78,725.34x = 2,309,907,808.97
  5. Step 5: Solve for x
    x = 2,309,907,808.97/78,725.34
  6. Step 6: Final answer
    x = 29,341.35

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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.