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Finding the Fourth Proportional to 72,955.76, 109,482.87 and 28,577.00

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Solution

The fourth proportional to 72,955.76, 109,482.87 and 28,577.00 is: 42,884.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,955.76 : 109,482.87 = 28,577.00 : x
  2. Step 2: Convert to fraction form
    72,955.76/109,482.87 = 28,577.00/x
  3. Step 3: Cross multiply
    72,955.76x = 109,482.87 × 28,577.00
  4. Step 4: Simplify right side
    72,955.76x = 3,128,692,321.14
  5. Step 5: Solve for x
    x = 3,128,692,321.14/72,955.76
  6. Step 6: Final answer
    x = 42,884.79

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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.