Home / 72,557,111.76-100,128,814.26-39,962,063.76

Finding the Fourth Proportional to 72,557,111.76, 100,128,814.26 and 39,962,063.76

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Solution

The fourth proportional to 72,557,111.76, 100,128,814.26 and 39,962,063.76 is: 55,147,648.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,557,111.76 : 100,128,814.26 = 39,962,063.76 : x
  2. Step 2: Convert to fraction form
    72,557,111.76/100,128,814.26 = 39,962,063.76/x
  3. Step 3: Cross multiply
    72,557,111.76x = 100,128,814.26 × 39,962,063.76
  4. Step 4: Simplify right side
    72,557,111.76x = 4,001,354,059,671,317
  5. Step 5: Solve for x
    x = 4,001,354,059,671,317/72,557,111.76
  6. Step 6: Final answer
    x = 55,147,648.01

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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.