Home / 51,315.40-70,815.30-29,809.32

Finding the Fourth Proportional to 51,315.40, 70,815.30 and 29,809.32

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Solution

The fourth proportional to 51,315.40, 70,815.30 and 29,809.32 is: 41,136.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,315.40 : 70,815.30 = 29,809.32 : x
  2. Step 2: Convert to fraction form
    51,315.40/70,815.30 = 29,809.32/x
  3. Step 3: Cross multiply
    51,315.40x = 70,815.30 × 29,809.32
  4. Step 4: Simplify right side
    51,315.40x = 2,110,955,938.60
  5. Step 5: Solve for x
    x = 2,110,955,938.60/51,315.40
  6. Step 6: Final answer
    x = 41,136.89

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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.