Home / 75,354.40-103,878.04-57,418.28

Finding the Fourth Proportional to 75,354.40, 103,878.04 and 57,418.28

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Solution

The fourth proportional to 75,354.40, 103,878.04 and 57,418.28 is: 79,152.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,354.40 : 103,878.04 = 57,418.28 : x
  2. Step 2: Convert to fraction form
    75,354.40/103,878.04 = 57,418.28/x
  3. Step 3: Cross multiply
    75,354.40x = 103,878.04 × 57,418.28
  4. Step 4: Simplify right side
    75,354.40x = 5,964,498,386.57
  5. Step 5: Solve for x
    x = 5,964,498,386.57/75,354.40
  6. Step 6: Final answer
    x = 79,152.62

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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.