Home / 105,445.28-145,515.33-57,699.02

Finding the Fourth Proportional to 105,445.28, 145,515.33 and 57,699.02

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Solution

The fourth proportional to 105,445.28, 145,515.33 and 57,699.02 is: 79,625.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,445.28 : 145,515.33 = 57,699.02 : x
  2. Step 2: Convert to fraction form
    105,445.28/145,515.33 = 57,699.02/x
  3. Step 3: Cross multiply
    105,445.28x = 145,515.33 × 57,699.02
  4. Step 4: Simplify right side
    105,445.28x = 8,396,091,208.40
  5. Step 5: Solve for x
    x = 8,396,091,208.40/105,445.28
  6. Step 6: Final answer
    x = 79,625.11

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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.