Home / 28,172,220.30-42,258,330.45-21,787,055.10

Finding the Fourth Proportional to 28,172,220.30, 42,258,330.45 and 21,787,055.10

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Solution

The fourth proportional to 28,172,220.30, 42,258,330.45 and 21,787,055.10 is: 32,680,582.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,172,220.30 : 42,258,330.45 = 21,787,055.10 : x
  2. Step 2: Convert to fraction form
    28,172,220.30/42,258,330.45 = 21,787,055.10/x
  3. Step 3: Cross multiply
    28,172,220.30x = 42,258,330.45 × 21,787,055.10
  4. Step 4: Simplify right side
    28,172,220.30x = 920,684,573,948,157.88
  5. Step 5: Solve for x
    x = 920,684,573,948,157.88/28,172,220.30
  6. Step 6: Final answer
    x = 32,680,582.65

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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.