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Finding the Fourth Proportional to 70,852.50, 97,775.40 and 39,021.42

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Solution

The fourth proportional to 70,852.50, 97,775.40 and 39,021.42 is: 53,848.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,852.50 : 97,775.40 = 39,021.42 : x
  2. Step 2: Convert to fraction form
    70,852.50/97,775.40 = 39,021.42/x
  3. Step 3: Cross multiply
    70,852.50x = 97,775.40 × 39,021.42
  4. Step 4: Simplify right side
    70,852.50x = 3,815,334,949.07
  5. Step 5: Solve for x
    x = 3,815,334,949.07/70,852.50
  6. Step 6: Final answer
    x = 53,848.98

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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.