Home / 31,807,481.40-47,730,905.10-12,636,239.40

Finding the Fourth Proportional to 31,807,481.40, 47,730,905.10 and 12,636,239.40

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Solution

The fourth proportional to 31,807,481.40, 47,730,905.10 and 12,636,239.40 is: 18,962,178.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,807,481.40 : 47,730,905.10 = 12,636,239.40 : x
  2. Step 2: Convert to fraction form
    31,807,481.40/47,730,905.10 = 12,636,239.40/x
  3. Step 3: Cross multiply
    31,807,481.40x = 47,730,905.10 × 12,636,239.40
  4. Step 4: Simplify right side
    31,807,481.40x = 603,139,143,622,281
  5. Step 5: Solve for x
    x = 603,139,143,622,281/31,807,481.40
  6. Step 6: Final answer
    x = 18,962,178.62

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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.