Home / 31,502,721.40-47,159,603.70-18,716,644.60

Finding the Fourth Proportional to 31,502,721.40, 47,159,603.70 and 18,716,644.60

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Solution

The fourth proportional to 31,502,721.40, 47,159,603.70 and 18,716,644.60 is: 28,018,834.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,502,721.40 : 47,159,603.70 = 18,716,644.60 : x
  2. Step 2: Convert to fraction form
    31,502,721.40/47,159,603.70 = 18,716,644.60/x
  3. Step 3: Cross multiply
    31,502,721.40x = 47,159,603.70 × 18,716,644.60
  4. Step 4: Simplify right side
    31,502,721.40x = 882,669,541,929,745.12
  5. Step 5: Solve for x
    x = 882,669,541,929,745.12/31,502,721.40
  6. Step 6: Final answer
    x = 28,018,834.65

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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.