Home / 66,318,457.60-99,278,620.80-39,378,246.40

Finding the Fourth Proportional to 66,318,457.60, 99,278,620.80 and 39,378,246.40

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Solution

The fourth proportional to 66,318,457.60, 99,278,620.80 and 39,378,246.40 is: 58,949,169.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,318,457.60 : 99,278,620.80 = 39,378,246.40 : x
  2. Step 2: Convert to fraction form
    66,318,457.60/99,278,620.80 = 39,378,246.40/x
  3. Step 3: Cross multiply
    66,318,457.60x = 99,278,620.80 × 39,378,246.40
  4. Step 4: Simplify right side
    66,318,457.60x = 3,909,417,992,114,565
  5. Step 5: Solve for x
    x = 3,909,417,992,114,565/66,318,457.60
  6. Step 6: Final answer
    x = 58,949,169.41

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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.