Home / 81,431.81-112,387.76-45,624.24

Finding the Fourth Proportional to 81,431.81, 112,387.76 and 45,624.24

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Solution

The fourth proportional to 81,431.81, 112,387.76 and 45,624.24 is: 62,968.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,431.81 : 112,387.76 = 45,624.24 : x
  2. Step 2: Convert to fraction form
    81,431.81/112,387.76 = 45,624.24/x
  3. Step 3: Cross multiply
    81,431.81x = 112,387.76 × 45,624.24
  4. Step 4: Simplify right side
    81,431.81x = 5,127,606,249.36
  5. Step 5: Solve for x
    x = 5,127,606,249.36/81,431.81
  6. Step 6: Final answer
    x = 62,968.10

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1.5x scale

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.