Home / 31,709,866.07-43,758,870.91-18,657,970.36

Finding the Fourth Proportional to 31,709,866.07, 43,758,870.91 and 18,657,970.36

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Solution

The fourth proportional to 31,709,866.07, 43,758,870.91 and 18,657,970.36 is: 25,747,561.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,709,866.07 : 43,758,870.91 = 18,657,970.36 : x
  2. Step 2: Convert to fraction form
    31,709,866.07/43,758,870.91 = 18,657,970.36/x
  3. Step 3: Cross multiply
    31,709,866.07x = 43,758,870.91 × 18,657,970.36
  4. Step 4: Simplify right side
    31,709,866.07x = 816,451,716,363,094.12
  5. Step 5: Solve for x
    x = 816,451,716,363,094.12/31,709,866.07
  6. Step 6: Final answer
    x = 25,747,561.17

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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.