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Finding the Fourth Proportional to 66,446,792.60, 99,471,123.30 and 39,506,581.40

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Solution

The fourth proportional to 66,446,792.60, 99,471,123.30 and 39,506,581.40 is: 59,141,515.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,446,792.60 : 99,471,123.30 = 39,506,581.40 : x
  2. Step 2: Convert to fraction form
    66,446,792.60/99,471,123.30 = 39,506,581.40/x
  3. Step 3: Cross multiply
    66,446,792.60x = 99,471,123.30 × 39,506,581.40
  4. Step 4: Simplify right side
    66,446,792.60x = 3,929,764,029,600,886.50
  5. Step 5: Solve for x
    x = 3,929,764,029,600,886.50/66,446,792.60
  6. Step 6: Final answer
    x = 59,141,515.73

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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.