Home / 90,780.75-125,277.44-51,036.75

Finding the Fourth Proportional to 90,780.75, 125,277.44 and 51,036.75

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Solution

The fourth proportional to 90,780.75, 125,277.44 and 51,036.75 is: 70,430.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,780.75 : 125,277.44 = 51,036.75 : x
  2. Step 2: Convert to fraction form
    90,780.75/125,277.44 = 51,036.75/x
  3. Step 3: Cross multiply
    90,780.75x = 125,277.44 × 51,036.75
  4. Step 4: Simplify right side
    90,780.75x = 6,393,753,130.74
  5. Step 5: Solve for x
    x = 6,393,753,130.74/90,780.75
  6. Step 6: Final answer
    x = 70,430.72

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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.