Home / 90,668.85-125,087.19-52,421.40

Finding the Fourth Proportional to 90,668.85, 125,087.19 and 52,421.40

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Solution

The fourth proportional to 90,668.85, 125,087.19 and 52,421.40 is: 72,320.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,668.85 : 125,087.19 = 52,421.40 : x
  2. Step 2: Convert to fraction form
    90,668.85/125,087.19 = 52,421.40/x
  3. Step 3: Cross multiply
    90,668.85x = 125,087.19 × 52,421.40
  4. Step 4: Simplify right side
    90,668.85x = 6,557,245,621.87
  5. Step 5: Solve for x
    x = 6,557,245,621.87/90,668.85
  6. Step 6: Final answer
    x = 72,320.82

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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.