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Finding the Fourth Proportional to 70,937.76, 97,894.77 and 39,107.79

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Solution

The fourth proportional to 70,937.76, 97,894.77 and 39,107.79 is: 53,969.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,937.76 : 97,894.77 = 39,107.79 : x
  2. Step 2: Convert to fraction form
    70,937.76/97,894.77 = 39,107.79/x
  3. Step 3: Cross multiply
    70,937.76x = 97,894.77 × 39,107.79
  4. Step 4: Simplify right side
    70,937.76x = 3,828,448,107.26
  5. Step 5: Solve for x
    x = 3,828,448,107.26/70,937.76
  6. Step 6: Final answer
    x = 53,969.11

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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.