Home / 70,347,299.10-105,516,945.90-21,162,106.50

Finding the Fourth Proportional to 70,347,299.10, 105,516,945.90 and 21,162,106.50

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Solution

The fourth proportional to 70,347,299.10, 105,516,945.90 and 21,162,106.50 is: 31,741,955.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,347,299.10 : 105,516,945.90 = 21,162,106.50 : x
  2. Step 2: Convert to fraction form
    70,347,299.10/105,516,945.90 = 21,162,106.50/x
  3. Step 3: Cross multiply
    70,347,299.10x = 105,516,945.90 × 21,162,106.50
  4. Step 4: Simplify right side
    70,347,299.10x = 2,232,960,846,690,538.50
  5. Step 5: Solve for x
    x = 2,232,960,846,690,538.50/70,347,299.10
  6. Step 6: Final answer
    x = 31,741,955.63

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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.