Home / 75,810.90-113,825.70-57,221.40

Finding the Fourth Proportional to 75,810.90, 113,825.70 and 57,221.40

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Solution

The fourth proportional to 75,810.90, 113,825.70 and 57,221.40 is: 85,914.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,810.90 : 113,825.70 = 57,221.40 : x
  2. Step 2: Convert to fraction form
    75,810.90/113,825.70 = 57,221.40/x
  3. Step 3: Cross multiply
    75,810.90x = 113,825.70 × 57,221.40
  4. Step 4: Simplify right side
    75,810.90x = 6,513,265,909.98
  5. Step 5: Solve for x
    x = 6,513,265,909.98/75,810.90
  6. Step 6: Final answer
    x = 85,914.64

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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.