Home / 72,557,113.76-100,128,817.02-39,962,065.76

Finding the Fourth Proportional to 72,557,113.76, 100,128,817.02 and 39,962,065.76

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Solution

The fourth proportional to 72,557,113.76, 100,128,817.02 and 39,962,065.76 is: 55,147,650.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,557,113.76 : 100,128,817.02 = 39,962,065.76 : x
  2. Step 2: Convert to fraction form
    72,557,113.76/100,128,817.02 = 39,962,065.76/x
  3. Step 3: Cross multiply
    72,557,113.76x = 100,128,817.02 × 39,962,065.76
  4. Step 4: Simplify right side
    72,557,113.76x = 4,001,354,370,224,247
  5. Step 5: Solve for x
    x = 4,001,354,370,224,247/72,557,113.76
  6. Step 6: Final answer
    x = 55,147,650.77

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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.