Home / 31,920,021.40-47,880,032.10-19,154,939.80

Finding the Fourth Proportional to 31,920,021.40, 47,880,032.10 and 19,154,939.80

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Solution

The fourth proportional to 31,920,021.40, 47,880,032.10 and 19,154,939.80 is: 28,732,409.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,920,021.40 : 47,880,032.10 = 19,154,939.80 : x
  2. Step 2: Convert to fraction form
    31,920,021.40/47,880,032.10 = 19,154,939.80/x
  3. Step 3: Cross multiply
    31,920,021.40x = 47,880,032.10 × 19,154,939.80
  4. Step 4: Simplify right side
    31,920,021.40x = 917,139,132,497,567.62
  5. Step 5: Solve for x
    x = 917,139,132,497,567.62/31,920,021.40
  6. Step 6: Final answer
    x = 28,732,409.70

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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.