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Finding the Fourth Proportional to 70,907.98, 97,857.63 and 40,703.08

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Solution

The fourth proportional to 70,907.98, 97,857.63 and 40,703.08 is: 56,172.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,907.98 : 97,857.63 = 40,703.08 : x
  2. Step 2: Convert to fraction form
    70,907.98/97,857.63 = 40,703.08/x
  3. Step 3: Cross multiply
    70,907.98x = 97,857.63 × 40,703.08
  4. Step 4: Simplify right side
    70,907.98x = 3,983,106,249.70
  5. Step 5: Solve for x
    x = 3,983,106,249.70/70,907.98
  6. Step 6: Final answer
    x = 56,172.90

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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.