Home / 28,512,953.80-42,771,069.10-8,321,312.20

Finding the Fourth Proportional to 28,512,953.80, 42,771,069.10 and 8,321,312.20

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Solution

The fourth proportional to 28,512,953.80, 42,771,069.10 and 8,321,312.20 is: 12,482,446.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,512,953.80 : 42,771,069.10 = 8,321,312.20 : x
  2. Step 2: Convert to fraction form
    28,512,953.80/42,771,069.10 = 8,321,312.20/x
  3. Step 3: Cross multiply
    28,512,953.80x = 42,771,069.10 × 8,321,312.20
  4. Step 4: Simplify right side
    28,512,953.80x = 355,911,419,108,873.06
  5. Step 5: Solve for x
    x = 355,911,419,108,873.06/28,512,953.80
  6. Step 6: Final answer
    x = 12,482,446.46

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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.