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Finding the Fourth Proportional to 70,937.15, 97,893.95 and 39,107.21

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Solution

The fourth proportional to 70,937.15, 97,893.95 and 39,107.21 is: 53,968.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,937.15 : 97,893.95 = 39,107.21 : x
  2. Step 2: Convert to fraction form
    70,937.15/97,893.95 = 39,107.21/x
  3. Step 3: Cross multiply
    70,937.15x = 97,893.95 × 39,107.21
  4. Step 4: Simplify right side
    70,937.15x = 3,828,358,575.37
  5. Step 5: Solve for x
    x = 3,828,358,575.37/70,937.15
  6. Step 6: Final answer
    x = 53,968.32

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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.