Home / 72,718,085.55-109,077,128.33-66,021,928.95

Finding the Fourth Proportional to 72,718,085.55, 109,077,128.33 and 66,021,928.95

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Solution

The fourth proportional to 72,718,085.55, 109,077,128.33 and 66,021,928.95 is: 99,032,893.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,718,085.55 : 109,077,128.33 = 66,021,928.95 : x
  2. Step 2: Convert to fraction form
    72,718,085.55/109,077,128.33 = 66,021,928.95/x
  3. Step 3: Cross multiply
    72,718,085.55x = 109,077,128.33 × 66,021,928.95
  4. Step 4: Simplify right side
    72,718,085.55x = 7,201,482,416,343,183
  5. Step 5: Solve for x
    x = 7,201,482,416,343,183/72,718,085.55
  6. Step 6: Final answer
    x = 99,032,893.43

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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.