Home / 30,081,616.80-45,122,425.20-28,168,429.20

Finding the Fourth Proportional to 30,081,616.80, 45,122,425.20 and 28,168,429.20

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Solution

The fourth proportional to 30,081,616.80, 45,122,425.20 and 28,168,429.20 is: 42,252,643.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,081,616.80 : 45,122,425.20 = 28,168,429.20 : x
  2. Step 2: Convert to fraction form
    30,081,616.80/45,122,425.20 = 28,168,429.20/x
  3. Step 3: Cross multiply
    30,081,616.80x = 45,122,425.20 × 28,168,429.20
  4. Step 4: Simplify right side
    30,081,616.80x = 1,271,027,839,578,496
  5. Step 5: Solve for x
    x = 1,271,027,839,578,496/30,081,616.80
  6. Step 6: Final answer
    x = 42,252,643.80

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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.