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Finding the Fourth Proportional to 70,950.72, 97,911.36 and 39,119.88

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Solution

The fourth proportional to 70,950.72, 97,911.36 and 39,119.88 is: 53,985.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,950.72 : 97,911.36 = 39,119.88 : x
  2. Step 2: Convert to fraction form
    70,950.72/97,911.36 = 39,119.88/x
  3. Step 3: Cross multiply
    70,950.72x = 97,911.36 × 39,119.88
  4. Step 4: Simplify right side
    70,950.72x = 3,830,280,653.84
  5. Step 5: Solve for x
    x = 3,830,280,653.84/70,950.72
  6. Step 6: Final answer
    x = 53,985.09

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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.