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Finding the Fourth Proportional to 82,984,672.70, 124,477,009.05 and 74,765,051.90

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Solution

The fourth proportional to 82,984,672.70, 124,477,009.05 and 74,765,051.90 is: 112,147,577.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,984,672.70 : 124,477,009.05 = 74,765,051.90 : x
  2. Step 2: Convert to fraction form
    82,984,672.70/124,477,009.05 = 74,765,051.90/x
  3. Step 3: Cross multiply
    82,984,672.70x = 124,477,009.05 × 74,765,051.90
  4. Step 4: Simplify right side
    82,984,672.70x = 9,306,530,041,980,020
  5. Step 5: Solve for x
    x = 9,306,530,041,980,020/82,984,672.70
  6. Step 6: Final answer
    x = 112,147,577.85

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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.