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Finding the Fourth Proportional to 72,454.06, 99,936.03 and 70,015.54

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Solution

The fourth proportional to 72,454.06, 99,936.03 and 70,015.54 is: 96,572.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,454.06 : 99,936.03 = 70,015.54 : x
  2. Step 2: Convert to fraction form
    72,454.06/99,936.03 = 70,015.54/x
  3. Step 3: Cross multiply
    72,454.06x = 99,936.03 × 70,015.54
  4. Step 4: Simplify right side
    72,454.06x = 6,997,075,105.91
  5. Step 5: Solve for x
    x = 6,997,075,105.91/72,454.06
  6. Step 6: Final answer
    x = 96,572.57

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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.