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Finding the Fourth Proportional to 72,941.40, 100,655.73 and 49,064.22

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Solution

The fourth proportional to 72,941.40, 100,655.73 and 49,064.22 is: 67,706.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,941.40 : 100,655.73 = 49,064.22 : x
  2. Step 2: Convert to fraction form
    72,941.40/100,655.73 = 49,064.22/x
  3. Step 3: Cross multiply
    72,941.40x = 100,655.73 × 49,064.22
  4. Step 4: Simplify right side
    72,941.40x = 4,938,594,880.98
  5. Step 5: Solve for x
    x = 4,938,594,880.98/72,941.40
  6. Step 6: Final answer
    x = 67,706.34

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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.