Home / 81,685,995.87-112,729,036.65-45,018,928.83

Finding the Fourth Proportional to 81,685,995.87, 112,729,036.65 and 45,018,928.83

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Solution

The fourth proportional to 81,685,995.87, 112,729,036.65 and 45,018,928.83 is: 62,127,423.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,685,995.87 : 112,729,036.65 = 45,018,928.83 : x
  2. Step 2: Convert to fraction form
    81,685,995.87/112,729,036.65 = 45,018,928.83/x
  3. Step 3: Cross multiply
    81,685,995.87x = 112,729,036.65 × 45,018,928.83
  4. Step 4: Simplify right side
    81,685,995.87x = 5,074,940,478,020,812
  5. Step 5: Solve for x
    x = 5,074,940,478,020,812/81,685,995.87
  6. Step 6: Final answer
    x = 62,127,423.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.