Home / 81,437.02-112,387.70-45,638.56

Finding the Fourth Proportional to 81,437.02, 112,387.70 and 45,638.56

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Solution

The fourth proportional to 81,437.02, 112,387.70 and 45,638.56 is: 62,983.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,437.02 : 112,387.70 = 45,638.56 : x
  2. Step 2: Convert to fraction form
    81,437.02/112,387.70 = 45,638.56/x
  3. Step 3: Cross multiply
    81,437.02x = 112,387.70 × 45,638.56
  4. Step 4: Simplify right side
    81,437.02x = 5,129,212,789.71
  5. Step 5: Solve for x
    x = 5,129,212,789.71/81,437.02
  6. Step 6: Final answer
    x = 62,983.80

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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.