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Finding the Fourth Proportional to 72,480.33, 100,026.99 and 40,646.70

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Solution

The fourth proportional to 72,480.33, 100,026.99 and 40,646.70 is: 56,094.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,480.33 : 100,026.99 = 40,646.70 : x
  2. Step 2: Convert to fraction form
    72,480.33/100,026.99 = 40,646.70/x
  3. Step 3: Cross multiply
    72,480.33x = 100,026.99 × 40,646.70
  4. Step 4: Simplify right side
    72,480.33x = 4,065,767,054.43
  5. Step 5: Solve for x
    x = 4,065,767,054.43/72,480.33
  6. Step 6: Final answer
    x = 56,094.76

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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.