Home / 28,995,321.20-43,492,981.80-19,440,172.40

Finding the Fourth Proportional to 28,995,321.20, 43,492,981.80 and 19,440,172.40

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Solution

The fourth proportional to 28,995,321.20, 43,492,981.80 and 19,440,172.40 is: 29,160,258.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,995,321.20 : 43,492,981.80 = 19,440,172.40 : x
  2. Step 2: Convert to fraction form
    28,995,321.20/43,492,981.80 = 19,440,172.40/x
  3. Step 3: Cross multiply
    28,995,321.20x = 43,492,981.80 × 19,440,172.40
  4. Step 4: Simplify right side
    28,995,321.20x = 845,511,064,382,062.25
  5. Step 5: Solve for x
    x = 845,511,064,382,062.25/28,995,321.20
  6. Step 6: Final answer
    x = 29,160,258.60

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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.