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Finding the Fourth Proportional to 72,492.64, 100,044.44 and 40,663.60

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Solution

The fourth proportional to 72,492.64, 100,044.44 and 40,663.60 is: 56,118.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,492.64 : 100,044.44 = 40,663.60 : x
  2. Step 2: Convert to fraction form
    72,492.64/100,044.44 = 40,663.60/x
  3. Step 3: Cross multiply
    72,492.64x = 100,044.44 × 40,663.60
  4. Step 4: Simplify right side
    72,492.64x = 4,068,167,090.38
  5. Step 5: Solve for x
    x = 4,068,167,090.38/72,492.64
  6. Step 6: Final answer
    x = 56,118.35

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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.