Home / 86,909,588.20-130,380,128.70-43,669,973.80

Finding the Fourth Proportional to 86,909,588.20, 130,380,128.70 and 43,669,973.80

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Solution

The fourth proportional to 86,909,588.20, 130,380,128.70 and 43,669,973.80 is: 65,512,872.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,909,588.20 : 130,380,128.70 = 43,669,973.80 : x
  2. Step 2: Convert to fraction form
    86,909,588.20/130,380,128.70 = 43,669,973.80/x
  3. Step 3: Cross multiply
    86,909,588.20x = 130,380,128.70 × 43,669,973.80
  4. Step 4: Simplify right side
    86,909,588.20x = 5,693,696,804,369,628
  5. Step 5: Solve for x
    x = 5,693,696,804,369,628/86,909,588.20
  6. Step 6: Final answer
    x = 65,512,872.89

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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.