Home / 80,881,424.70-121,322,137.05-76,417,320.30

Finding the Fourth Proportional to 80,881,424.70, 121,322,137.05 and 76,417,320.30

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Solution

The fourth proportional to 80,881,424.70, 121,322,137.05 and 76,417,320.30 is: 114,625,980.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,881,424.70 : 121,322,137.05 = 76,417,320.30 : x
  2. Step 2: Convert to fraction form
    80,881,424.70/121,322,137.05 = 76,417,320.30/x
  3. Step 3: Cross multiply
    80,881,424.70x = 121,322,137.05 × 76,417,320.30
  4. Step 4: Simplify right side
    80,881,424.70x = 9,271,112,606,430,346
  5. Step 5: Solve for x
    x = 9,271,112,606,430,346/80,881,424.70
  6. Step 6: Final answer
    x = 114,625,980.45

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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.