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Finding the Fourth Proportional to 66,445,579.20, 99,668,368.80 and 66,445,579.20

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Solution

The fourth proportional to 66,445,579.20, 99,668,368.80 and 66,445,579.20 is: 99,668,368.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,445,579.20 : 99,668,368.80 = 66,445,579.20 : x
  2. Step 2: Convert to fraction form
    66,445,579.20/99,668,368.80 = 66,445,579.20/x
  3. Step 3: Cross multiply
    66,445,579.20x = 99,668,368.80 × 66,445,579.20
  4. Step 4: Simplify right side
    66,445,579.20x = 6,622,522,492,835,209
  5. Step 5: Solve for x
    x = 6,622,522,492,835,209/66,445,579.20
  6. Step 6: Final answer
    x = 99,668,368.80

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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.