Home / 86,281,356.40-129,422,034.60-76,875,506.80

Finding the Fourth Proportional to 86,281,356.40, 129,422,034.60 and 76,875,506.80

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Solution

The fourth proportional to 86,281,356.40, 129,422,034.60 and 76,875,506.80 is: 115,313,260.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,281,356.40 : 129,422,034.60 = 76,875,506.80 : x
  2. Step 2: Convert to fraction form
    86,281,356.40/129,422,034.60 = 76,875,506.80/x
  3. Step 3: Cross multiply
    86,281,356.40x = 129,422,034.60 × 76,875,506.80
  4. Step 4: Simplify right side
    86,281,356.40x = 9,949,384,500,962,134
  5. Step 5: Solve for x
    x = 9,949,384,500,962,134/86,281,356.40
  6. Step 6: Final answer
    x = 115,313,260.20

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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.