Home / 72,724.40-100,345.20-40,892.48

Finding the Fourth Proportional to 72,724.40, 100,345.20 and 40,892.48

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Solution

The fourth proportional to 72,724.40, 100,345.20 and 40,892.48 is: 56,423.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,724.40 : 100,345.20 = 40,892.48 : x
  2. Step 2: Convert to fraction form
    72,724.40/100,345.20 = 40,892.48/x
  3. Step 3: Cross multiply
    72,724.40x = 100,345.20 × 40,892.48
  4. Step 4: Simplify right side
    72,724.40x = 4,103,364,084.10
  5. Step 5: Solve for x
    x = 4,103,364,084.10/72,724.40
  6. Step 6: Final answer
    x = 56,423.48

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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.