Home / 75,278.56-103,886.31-42,570.35

Finding the Fourth Proportional to 75,278.56, 103,886.31 and 42,570.35

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Solution

The fourth proportional to 75,278.56, 103,886.31 and 42,570.35 is: 58,748.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,278.56 : 103,886.31 = 42,570.35 : x
  2. Step 2: Convert to fraction form
    75,278.56/103,886.31 = 42,570.35/x
  3. Step 3: Cross multiply
    75,278.56x = 103,886.31 × 42,570.35
  4. Step 4: Simplify right side
    75,278.56x = 4,422,476,576.91
  5. Step 5: Solve for x
    x = 4,422,476,576.91/75,278.56
  6. Step 6: Final answer
    x = 58,748.16

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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.