Home / 72,921,260.69-100,631,114.55-39,430,505.34

Finding the Fourth Proportional to 72,921,260.69, 100,631,114.55 and 39,430,505.34

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Solution

The fourth proportional to 72,921,260.69, 100,631,114.55 and 39,430,505.34 is: 54,413,975.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,921,260.69 : 100,631,114.55 = 39,430,505.34 : x
  2. Step 2: Convert to fraction form
    72,921,260.69/100,631,114.55 = 39,430,505.34/x
  3. Step 3: Cross multiply
    72,921,260.69x = 100,631,114.55 × 39,430,505.34
  4. Step 4: Simplify right side
    72,921,260.69x = 3,967,935,699,633,927
  5. Step 5: Solve for x
    x = 3,967,935,699,633,927/72,921,260.69
  6. Step 6: Final answer
    x = 54,413,975.60

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1.5x scale

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.