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Finding the Fourth Proportional to 35,980.19, 53,900.15 and 21,905.30

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Solution

The fourth proportional to 35,980.19, 53,900.15 and 21,905.30 is: 32,815.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,980.19 : 53,900.15 = 21,905.30 : x
  2. Step 2: Convert to fraction form
    35,980.19/53,900.15 = 21,905.30/x
  3. Step 3: Cross multiply
    35,980.19x = 53,900.15 × 21,905.30
  4. Step 4: Simplify right side
    35,980.19x = 1,180,698,955.80
  5. Step 5: Solve for x
    x = 1,180,698,955.80/35,980.19
  6. Step 6: Final answer
    x = 32,815.25

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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.