Home / 90,514.25-125,039.95-72,341.70

Finding the Fourth Proportional to 90,514.25, 125,039.95 and 72,341.70

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Solution

The fourth proportional to 90,514.25, 125,039.95 and 72,341.70 is: 99,935.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,514.25 : 125,039.95 = 72,341.70 : x
  2. Step 2: Convert to fraction form
    90,514.25/125,039.95 = 72,341.70/x
  3. Step 3: Cross multiply
    90,514.25x = 125,039.95 × 72,341.70
  4. Step 4: Simplify right side
    90,514.25x = 9,045,602,550.92
  5. Step 5: Solve for x
    x = 9,045,602,550.92/90,514.25
  6. Step 6: Final answer
    x = 99,935.67

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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.