Home / 72,557,085.75-100,128,778.35-39,962,037.75

Finding the Fourth Proportional to 72,557,085.75, 100,128,778.35 and 39,962,037.75

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Solution

The fourth proportional to 72,557,085.75, 100,128,778.35 and 39,962,037.75 is: 55,147,612.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,557,085.75 : 100,128,778.35 = 39,962,037.75 : x
  2. Step 2: Convert to fraction form
    72,557,085.75/100,128,778.35 = 39,962,037.75/x
  3. Step 3: Cross multiply
    72,557,085.75x = 100,128,778.35 × 39,962,037.75
  4. Step 4: Simplify right side
    72,557,085.75x = 4,001,350,020,284,082.50
  5. Step 5: Solve for x
    x = 4,001,350,020,284,082.50/72,557,085.75
  6. Step 6: Final answer
    x = 55,147,612.10

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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.