Home / 87,909.03-121,200.30-56,022.57

Finding the Fourth Proportional to 87,909.03, 121,200.30 and 56,022.57

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Solution

The fourth proportional to 87,909.03, 121,200.30 and 56,022.57 is: 77,238.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,909.03 : 121,200.30 = 56,022.57 : x
  2. Step 2: Convert to fraction form
    87,909.03/121,200.30 = 56,022.57/x
  3. Step 3: Cross multiply
    87,909.03x = 121,200.30 × 56,022.57
  4. Step 4: Simplify right side
    87,909.03x = 6,789,952,290.77
  5. Step 5: Solve for x
    x = 6,789,952,290.77/87,909.03
  6. Step 6: Final answer
    x = 77,238.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.