Home / 72,946.14-100,667.43-42,750.78

Finding the Fourth Proportional to 72,946.14, 100,667.43 and 42,750.78

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Solution

The fourth proportional to 72,946.14, 100,667.43 and 42,750.78 is: 58,997.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,946.14 : 100,667.43 = 42,750.78 : x
  2. Step 2: Convert to fraction form
    72,946.14/100,667.43 = 42,750.78/x
  3. Step 3: Cross multiply
    72,946.14x = 100,667.43 × 42,750.78
  4. Step 4: Simplify right side
    72,946.14x = 4,303,611,153.10
  5. Step 5: Solve for x
    x = 4,303,611,153.10/72,946.14
  6. Step 6: Final answer
    x = 58,997.11

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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.