Home / 72,644.32-100,238.25-40,807.12

Finding the Fourth Proportional to 72,644.32, 100,238.25 and 40,807.12

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Solution

The fourth proportional to 72,644.32, 100,238.25 and 40,807.12 is: 56,307.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,644.32 : 100,238.25 = 40,807.12 : x
  2. Step 2: Convert to fraction form
    72,644.32/100,238.25 = 40,807.12/x
  3. Step 3: Cross multiply
    72,644.32x = 100,238.25 × 40,807.12
  4. Step 4: Simplify right side
    72,644.32x = 4,090,434,296.34
  5. Step 5: Solve for x
    x = 4,090,434,296.34/72,644.32
  6. Step 6: Final answer
    x = 56,307.70

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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.