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Finding the Fourth Proportional to 100,010.40, 150,015.60 and 40,807.20

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Solution

The fourth proportional to 100,010.40, 150,015.60 and 40,807.20 is: 61,210.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,010.40 : 150,015.60 = 40,807.20 : x
  2. Step 2: Convert to fraction form
    100,010.40/150,015.60 = 40,807.20/x
  3. Step 3: Cross multiply
    100,010.40x = 150,015.60 × 40,807.20
  4. Step 4: Simplify right side
    100,010.40x = 6,121,716,592.32
  5. Step 5: Solve for x
    x = 6,121,716,592.32/100,010.40
  6. Step 6: Final answer
    x = 61,210.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.