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Finding the Fourth Proportional to 70,852.57, 97,780.97 and 39,021.46

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Solution

The fourth proportional to 70,852.57, 97,780.97 and 39,021.46 is: 53,852.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,852.57 : 97,780.97 = 39,021.46 : x
  2. Step 2: Convert to fraction form
    70,852.57/97,780.97 = 39,021.46/x
  3. Step 3: Cross multiply
    70,852.57x = 97,780.97 × 39,021.46
  4. Step 4: Simplify right side
    70,852.57x = 3,815,556,283.07
  5. Step 5: Solve for x
    x = 3,815,556,283.07/70,852.57
  6. Step 6: Final answer
    x = 53,852.05

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1.5x scale

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.