Home / 75,588.80-113,426.40-28,875.20

Finding the Fourth Proportional to 75,588.80, 113,426.40 and 28,875.20

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Solution

The fourth proportional to 75,588.80, 113,426.40 and 28,875.20 is: 43,329.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,588.80 : 113,426.40 = 28,875.20 : x
  2. Step 2: Convert to fraction form
    75,588.80/113,426.40 = 28,875.20/x
  3. Step 3: Cross multiply
    75,588.80x = 113,426.40 × 28,875.20
  4. Step 4: Simplify right side
    75,588.80x = 3,275,209,985.28
  5. Step 5: Solve for x
    x = 3,275,209,985.28/75,588.80
  6. Step 6: Final answer
    x = 43,329.30

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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.