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Finding the Fourth Proportional to 105,488.76, 145,570.92 and 57,741.12

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Solution

The fourth proportional to 105,488.76, 145,570.92 and 57,741.12 is: 79,680.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,488.76 : 145,570.92 = 57,741.12 : x
  2. Step 2: Convert to fraction form
    105,488.76/145,570.92 = 57,741.12/x
  3. Step 3: Cross multiply
    105,488.76x = 145,570.92 × 57,741.12
  4. Step 4: Simplify right side
    105,488.76x = 8,405,427,960.23
  5. Step 5: Solve for x
    x = 8,405,427,960.23/105,488.76
  6. Step 6: Final answer
    x = 79,680.79

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1.5x scale

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.