Home / 75,623.20-113,434.80-65,125.60

Finding the Fourth Proportional to 75,623.20, 113,434.80 and 65,125.60

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Solution

The fourth proportional to 75,623.20, 113,434.80 and 65,125.60 is: 97,688.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,623.20 : 113,434.80 = 65,125.60 : x
  2. Step 2: Convert to fraction form
    75,623.20/113,434.80 = 65,125.60/x
  3. Step 3: Cross multiply
    75,623.20x = 113,434.80 × 65,125.60
  4. Step 4: Simplify right side
    75,623.20x = 7,387,509,410.88
  5. Step 5: Solve for x
    x = 7,387,509,410.88/75,623.20
  6. Step 6: Final answer
    x = 97,688.40

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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.