Home / 86,289,048.80-129,433,573.20-72,684,159.20

Finding the Fourth Proportional to 86,289,048.80, 129,433,573.20 and 72,684,159.20

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Solution

The fourth proportional to 86,289,048.80, 129,433,573.20 and 72,684,159.20 is: 109,026,238.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,289,048.80 : 129,433,573.20 = 72,684,159.20 : x
  2. Step 2: Convert to fraction form
    86,289,048.80/129,433,573.20 = 72,684,159.20/x
  3. Step 3: Cross multiply
    86,289,048.80x = 129,433,573.20 × 72,684,159.20
  4. Step 4: Simplify right side
    86,289,048.80x = 9,407,770,440,293,654
  5. Step 5: Solve for x
    x = 9,407,770,440,293,654/86,289,048.80
  6. Step 6: Final answer
    x = 109,026,238.80

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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.