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Finding the Fourth Proportional to 75,703.69, 113,660.61 and 38,290.10

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Solution

The fourth proportional to 75,703.69, 113,660.61 and 38,290.10 is: 57,488.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,703.69 : 113,660.61 = 38,290.10 : x
  2. Step 2: Convert to fraction form
    75,703.69/113,660.61 = 38,290.10/x
  3. Step 3: Cross multiply
    75,703.69x = 113,660.61 × 38,290.10
  4. Step 4: Simplify right side
    75,703.69x = 4,352,075,999.12
  5. Step 5: Solve for x
    x = 4,352,075,999.12/75,703.69
  6. Step 6: Final answer
    x = 57,488.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.