Home / 75,623.60-113,435.40-69,921.20

Finding the Fourth Proportional to 75,623.60, 113,435.40 and 69,921.20

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Solution

The fourth proportional to 75,623.60, 113,435.40 and 69,921.20 is: 104,881.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,623.60 : 113,435.40 = 69,921.20 : x
  2. Step 2: Convert to fraction form
    75,623.60/113,435.40 = 69,921.20/x
  3. Step 3: Cross multiply
    75,623.60x = 113,435.40 × 69,921.20
  4. Step 4: Simplify right side
    75,623.60x = 7,931,539,290.48
  5. Step 5: Solve for x
    x = 7,931,539,290.48/75,623.60
  6. Step 6: Final answer
    x = 104,881.80

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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.