Home / 72,703,181.19-100,330,715.47-39,663,330.20

Finding the Fourth Proportional to 72,703,181.19, 100,330,715.47 and 39,663,330.20

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Solution

The fourth proportional to 72,703,181.19, 100,330,715.47 and 39,663,330.20 is: 54,735,573.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,703,181.19 : 100,330,715.47 = 39,663,330.20 : x
  2. Step 2: Convert to fraction form
    72,703,181.19/100,330,715.47 = 39,663,330.20/x
  3. Step 3: Cross multiply
    72,703,181.19x = 100,330,715.47 × 39,663,330.20
  4. Step 4: Simplify right side
    72,703,181.19x = 3,979,450,296,888,858.50
  5. Step 5: Solve for x
    x = 3,979,450,296,888,858.50/72,703,181.19
  6. Step 6: Final answer
    x = 54,735,573.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.