Home / 72,515.45-100,069.76-40,248.18

Finding the Fourth Proportional to 72,515.45, 100,069.76 and 40,248.18

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Solution

The fourth proportional to 72,515.45, 100,069.76 and 40,248.18 is: 55,541.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,515.45 : 100,069.76 = 40,248.18 : x
  2. Step 2: Convert to fraction form
    72,515.45/100,069.76 = 40,248.18/x
  3. Step 3: Cross multiply
    72,515.45x = 100,069.76 × 40,248.18
  4. Step 4: Simplify right side
    72,515.45x = 4,027,626,095.10
  5. Step 5: Solve for x
    x = 4,027,626,095.10/72,515.45
  6. Step 6: Final answer
    x = 55,541.63

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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.