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Finding the Fourth Proportional to 99,742,809.80, 149,708,693.10 and 61,479,057.80

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Solution

The fourth proportional to 99,742,809.80, 149,708,693.10 and 61,479,057.80 is: 92,276,820.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,742,809.80 : 149,708,693.10 = 61,479,057.80 : x
  2. Step 2: Convert to fraction form
    99,742,809.80/149,708,693.10 = 61,479,057.80/x
  3. Step 3: Cross multiply
    99,742,809.80x = 149,708,693.10 × 61,479,057.80
  4. Step 4: Simplify right side
    99,742,809.80x = 9,203,949,396,257,360
  5. Step 5: Solve for x
    x = 9,203,949,396,257,360/99,742,809.80
  6. Step 6: Final answer
    x = 92,276,820.90

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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.