Home / 81,051.40-121,548.30-36,699.40

Finding the Fourth Proportional to 81,051.40, 121,548.30 and 36,699.40

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Solution

The fourth proportional to 81,051.40, 121,548.30 and 36,699.40 is: 55,036.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,051.40 : 121,548.30 = 36,699.40 : x
  2. Step 2: Convert to fraction form
    81,051.40/121,548.30 = 36,699.40/x
  3. Step 3: Cross multiply
    81,051.40x = 121,548.30 × 36,699.40
  4. Step 4: Simplify right side
    81,051.40x = 4,460,749,681.02
  5. Step 5: Solve for x
    x = 4,460,749,681.02/81,051.40
  6. Step 6: Final answer
    x = 55,036.06

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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.