Home / 39,020,151.52-53,847,811.56-21,379,129.12

Finding the Fourth Proportional to 39,020,151.52, 53,847,811.56 and 21,379,129.12

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Solution

The fourth proportional to 39,020,151.52, 53,847,811.56 and 21,379,129.12 is: 29,503,199.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,020,151.52 : 53,847,811.56 = 21,379,129.12 : x
  2. Step 2: Convert to fraction form
    39,020,151.52/53,847,811.56 = 21,379,129.12/x
  3. Step 3: Cross multiply
    39,020,151.52x = 53,847,811.56 × 21,379,129.12
  4. Step 4: Simplify right side
    39,020,151.52x = 1,151,219,316,170,668.75
  5. Step 5: Solve for x
    x = 1,151,219,316,170,668.75/39,020,151.52
  6. Step 6: Final answer
    x = 29,503,199.53

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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.