Home / 105,489.18-145,569.48-57,733.32

Finding the Fourth Proportional to 105,489.18, 145,569.48 and 57,733.32

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Solution

The fourth proportional to 105,489.18, 145,569.48 and 57,733.32 is: 79,668.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,489.18 : 145,569.48 = 57,733.32 : x
  2. Step 2: Convert to fraction form
    105,489.18/145,569.48 = 57,733.32/x
  3. Step 3: Cross multiply
    105,489.18x = 145,569.48 × 57,733.32
  4. Step 4: Simplify right side
    105,489.18x = 8,404,209,371.07
  5. Step 5: Solve for x
    x = 8,404,209,371.07/105,489.18
  6. Step 6: Final answer
    x = 79,668.92

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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.