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Finding the Fourth Proportional to 72,798.30, 100,461.58 and 40,967.22

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Solution

The fourth proportional to 72,798.30, 100,461.58 and 40,967.22 is: 56,534.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,798.30 : 100,461.58 = 40,967.22 : x
  2. Step 2: Convert to fraction form
    72,798.30/100,461.58 = 40,967.22/x
  3. Step 3: Cross multiply
    72,798.30x = 100,461.58 × 40,967.22
  4. Step 4: Simplify right side
    72,798.30x = 4,115,631,649.41
  5. Step 5: Solve for x
    x = 4,115,631,649.41/72,798.30
  6. Step 6: Final answer
    x = 56,534.72

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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.