Home / 105,329.64-145,357.16-57,587.43

Finding the Fourth Proportional to 105,329.64, 145,357.16 and 57,587.43

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Solution

The fourth proportional to 105,329.64, 145,357.16 and 57,587.43 is: 79,471.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,329.64 : 145,357.16 = 57,587.43 : x
  2. Step 2: Convert to fraction form
    105,329.64/145,357.16 = 57,587.43/x
  3. Step 3: Cross multiply
    105,329.64x = 145,357.16 × 57,587.43
  4. Step 4: Simplify right side
    105,329.64x = 8,370,744,988.56
  5. Step 5: Solve for x
    x = 8,370,744,988.56/105,329.64
  6. Step 6: Final answer
    x = 79,471.88

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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.