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Finding the Fourth Proportional to 72,480.98, 100,024.46 and 40,649.19

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Solution

The fourth proportional to 72,480.98, 100,024.46 and 40,649.19 is: 56,096.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,480.98 : 100,024.46 = 40,649.19 : x
  2. Step 2: Convert to fraction form
    72,480.98/100,024.46 = 40,649.19/x
  3. Step 3: Cross multiply
    72,480.98x = 100,024.46 × 40,649.19
  4. Step 4: Simplify right side
    72,480.98x = 4,065,913,075.94
  5. Step 5: Solve for x
    x = 4,065,913,075.94/72,480.98
  6. Step 6: Final answer
    x = 56,096.28

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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.