Home / 87,908,021.60-131,771,053.20-39,409,109.60

Finding the Fourth Proportional to 87,908,021.60, 131,771,053.20 and 39,409,109.60

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Solution

The fourth proportional to 87,908,021.60, 131,771,053.20 and 39,409,109.60 is: 59,072,878.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,908,021.60 : 131,771,053.20 = 39,409,109.60 : x
  2. Step 2: Convert to fraction form
    87,908,021.60/131,771,053.20 = 39,409,109.60/x
  3. Step 3: Cross multiply
    87,908,021.60x = 131,771,053.20 × 39,409,109.60
  4. Step 4: Simplify right side
    87,908,021.60x = 5,192,979,877,666,231
  5. Step 5: Solve for x
    x = 5,192,979,877,666,231/87,908,021.60
  6. Step 6: Final answer
    x = 59,072,878.48

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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.