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Finding the Fourth Proportional to 70,851.68, 97,775.40 and 39,020.60

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Solution

The fourth proportional to 70,851.68, 97,775.40 and 39,020.60 is: 53,848.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,851.68 : 97,775.40 = 39,020.60 : x
  2. Step 2: Convert to fraction form
    70,851.68/97,775.40 = 39,020.60/x
  3. Step 3: Cross multiply
    70,851.68x = 97,775.40 × 39,020.60
  4. Step 4: Simplify right side
    70,851.68x = 3,815,254,773.24
  5. Step 5: Solve for x
    x = 3,815,254,773.24/70,851.68
  6. Step 6: Final answer
    x = 53,848.47

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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.