Home / 81,427.81-112,369.76-45,618.11

Finding the Fourth Proportional to 81,427.81, 112,369.76 and 45,618.11

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Solution

The fourth proportional to 81,427.81, 112,369.76 and 45,618.11 is: 62,952.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,427.81 : 112,369.76 = 45,618.11 : x
  2. Step 2: Convert to fraction form
    81,427.81/112,369.76 = 45,618.11/x
  3. Step 3: Cross multiply
    81,427.81x = 112,369.76 × 45,618.11
  4. Step 4: Simplify right side
    81,427.81x = 5,126,096,296.26
  5. Step 5: Solve for x
    x = 5,126,096,296.26/81,427.81
  6. Step 6: Final answer
    x = 62,952.65

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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.