Home / 72,557,108.75-100,128,810.12-39,962,060.75

Finding the Fourth Proportional to 72,557,108.75, 100,128,810.12 and 39,962,060.75

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Solution

The fourth proportional to 72,557,108.75, 100,128,810.12 and 39,962,060.75 is: 55,147,643.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,557,108.75 : 100,128,810.12 = 39,962,060.75 : x
  2. Step 2: Convert to fraction form
    72,557,108.75/100,128,810.12 = 39,962,060.75/x
  3. Step 3: Cross multiply
    72,557,108.75x = 100,128,810.12 × 39,962,060.75
  4. Step 4: Simplify right side
    72,557,108.75x = 4,001,353,592,840,655
  5. Step 5: Solve for x
    x = 4,001,353,592,840,655/72,557,108.75
  6. Step 6: Final answer
    x = 55,147,643.86

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Double scale
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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.