Home / 86,907,875.20-130,361,812.80-39,132,131.20

Finding the Fourth Proportional to 86,907,875.20, 130,361,812.80 and 39,132,131.20

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Solution

The fourth proportional to 86,907,875.20, 130,361,812.80 and 39,132,131.20 is: 58,698,196.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,907,875.20 : 130,361,812.80 = 39,132,131.20 : x
  2. Step 2: Convert to fraction form
    86,907,875.20/130,361,812.80 = 39,132,131.20/x
  3. Step 3: Cross multiply
    86,907,875.20x = 130,361,812.80 × 39,132,131.20
  4. Step 4: Simplify right side
    86,907,875.20x = 5,101,335,561,959,440
  5. Step 5: Solve for x
    x = 5,101,335,561,959,440/86,907,875.20
  6. Step 6: Final answer
    x = 58,698,196.80

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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.