Home / 90,187.40-124,447.72-51,959.45

Finding the Fourth Proportional to 90,187.40, 124,447.72 and 51,959.45

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Solution

The fourth proportional to 90,187.40, 124,447.72 and 51,959.45 is: 71,697.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,187.40 : 124,447.72 = 51,959.45 : x
  2. Step 2: Convert to fraction form
    90,187.40/124,447.72 = 51,959.45/x
  3. Step 3: Cross multiply
    90,187.40x = 124,447.72 × 51,959.45
  4. Step 4: Simplify right side
    90,187.40x = 6,466,235,084.95
  5. Step 5: Solve for x
    x = 6,466,235,084.95/90,187.40
  6. Step 6: Final answer
    x = 71,697.77

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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.