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Finding the Fourth Proportional to 72,798.21, 100,461.21 and 40,967.64

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Solution

The fourth proportional to 72,798.21, 100,461.21 and 40,967.64 is: 56,535.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,798.21 : 100,461.21 = 40,967.64 : x
  2. Step 2: Convert to fraction form
    72,798.21/100,461.21 = 40,967.64/x
  3. Step 3: Cross multiply
    72,798.21x = 100,461.21 × 40,967.64
  4. Step 4: Simplify right side
    72,798.21x = 4,115,658,685.24
  5. Step 5: Solve for x
    x = 4,115,658,685.24/72,798.21
  6. Step 6: Final answer
    x = 56,535.16

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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.