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Finding the Fourth Proportional to 70,838.63, 97,757.30 and 39,007.45

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Solution

The fourth proportional to 70,838.63, 97,757.30 and 39,007.45 is: 53,830.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,838.63 : 97,757.30 = 39,007.45 : x
  2. Step 2: Convert to fraction form
    70,838.63/97,757.30 = 39,007.45/x
  3. Step 3: Cross multiply
    70,838.63x = 97,757.30 × 39,007.45
  4. Step 4: Simplify right side
    70,838.63x = 3,813,262,845.01
  5. Step 5: Solve for x
    x = 3,813,262,845.01/70,838.63
  6. Step 6: Final answer
    x = 53,830.28

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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.