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Finding the Fourth Proportional to 72,482.28, 100,003.68 and 45,651.36

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Solution

The fourth proportional to 72,482.28, 100,003.68 and 45,651.36 is: 62,985.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,482.28 : 100,003.68 = 45,651.36 : x
  2. Step 2: Convert to fraction form
    72,482.28/100,003.68 = 45,651.36/x
  3. Step 3: Cross multiply
    72,482.28x = 100,003.68 × 45,651.36
  4. Step 4: Simplify right side
    72,482.28x = 4,565,303,997.00
  5. Step 5: Solve for x
    x = 4,565,303,997.00/72,482.28
  6. Step 6: Final answer
    x = 62,985.10

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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.