Home / 31,439,868.46-47,159,802.72-8,720,765.68

Finding the Fourth Proportional to 31,439,868.46, 47,159,802.72 and 8,720,765.68

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Solution

The fourth proportional to 31,439,868.46, 47,159,802.72 and 8,720,765.68 is: 13,081,148.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,439,868.46 : 47,159,802.72 = 8,720,765.68 : x
  2. Step 2: Convert to fraction form
    31,439,868.46/47,159,802.72 = 8,720,765.68/x
  3. Step 3: Cross multiply
    31,439,868.46x = 47,159,802.72 × 8,720,765.68
  4. Step 4: Simplify right side
    31,439,868.46x = 411,269,589,036,146.62
  5. Step 5: Solve for x
    x = 411,269,589,036,146.62/31,439,868.46
  6. Step 6: Final answer
    x = 13,081,148.53

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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.