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Finding the Fourth Proportional to 69,724,953.60, 104,587,430.40 and 66,589,670.40

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Solution

The fourth proportional to 69,724,953.60, 104,587,430.40 and 66,589,670.40 is: 99,884,505.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,724,953.60 : 104,587,430.40 = 66,589,670.40 : x
  2. Step 2: Convert to fraction form
    69,724,953.60/104,587,430.40 = 66,589,670.40/x
  3. Step 3: Cross multiply
    69,724,953.60x = 104,587,430.40 × 66,589,670.40
  4. Step 4: Simplify right side
    69,724,953.60x = 6,964,442,518,318,940
  5. Step 5: Solve for x
    x = 6,964,442,518,318,940/69,724,953.60
  6. Step 6: Final answer
    x = 99,884,505.60

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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.