Home / 105,559.88-145,671.54-57,812.84

Finding the Fourth Proportional to 105,559.88, 145,671.54 and 57,812.84

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Solution

The fourth proportional to 105,559.88, 145,671.54 and 57,812.84 is: 79,781.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,559.88 : 145,671.54 = 57,812.84 : x
  2. Step 2: Convert to fraction form
    105,559.88/145,671.54 = 57,812.84/x
  3. Step 3: Cross multiply
    105,559.88x = 145,671.54 × 57,812.84
  4. Step 4: Simplify right side
    105,559.88x = 8,421,685,434.57
  5. Step 5: Solve for x
    x = 8,421,685,434.57/105,559.88
  6. Step 6: Final answer
    x = 79,781.12

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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.