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Finding the Fourth Proportional to 70,507.45, 105,855.04 and 40,946.50

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Solution

The fourth proportional to 70,507.45, 105,855.04 and 40,946.50 is: 61,474.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,507.45 : 105,855.04 = 40,946.50 : x
  2. Step 2: Convert to fraction form
    70,507.45/105,855.04 = 40,946.50/x
  3. Step 3: Cross multiply
    70,507.45x = 105,855.04 × 40,946.50
  4. Step 4: Simplify right side
    70,507.45x = 4,334,393,395.36
  5. Step 5: Solve for x
    x = 4,334,393,395.36/70,507.45
  6. Step 6: Final answer
    x = 61,474.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.