Home / 105,551.34-145,663.11-57,806.70

Finding the Fourth Proportional to 105,551.34, 145,663.11 and 57,806.70

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Solution

The fourth proportional to 105,551.34, 145,663.11 and 57,806.70 is: 79,774.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,551.34 : 145,663.11 = 57,806.70 : x
  2. Step 2: Convert to fraction form
    105,551.34/145,663.11 = 57,806.70/x
  3. Step 3: Cross multiply
    105,551.34x = 145,663.11 × 57,806.70
  4. Step 4: Simplify right side
    105,551.34x = 8,420,303,700.84
  5. Step 5: Solve for x
    x = 8,420,303,700.84/105,551.34
  6. Step 6: Final answer
    x = 79,774.48

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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.