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Finding the Fourth Proportional to 73,017.77, 109,538.39 and 28,620.45

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Solution

The fourth proportional to 73,017.77, 109,538.39 and 28,620.45 is: 42,935.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,017.77 : 109,538.39 = 28,620.45 : x
  2. Step 2: Convert to fraction form
    73,017.77/109,538.39 = 28,620.45/x
  3. Step 3: Cross multiply
    73,017.77x = 109,538.39 × 28,620.45
  4. Step 4: Simplify right side
    73,017.77x = 3,135,038,085.63
  5. Step 5: Solve for x
    x = 3,135,038,085.63/73,017.77
  6. Step 6: Final answer
    x = 42,935.28

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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.