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Finding the Fourth Proportional to 72,495.60, 100,044.04 and 40,664.40

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Solution

The fourth proportional to 72,495.60, 100,044.04 and 40,664.40 is: 56,116.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,495.60 : 100,044.04 = 40,664.40 : x
  2. Step 2: Convert to fraction form
    72,495.60/100,044.04 = 40,664.40/x
  3. Step 3: Cross multiply
    72,495.60x = 100,044.04 × 40,664.40
  4. Step 4: Simplify right side
    72,495.60x = 4,068,230,860.18
  5. Step 5: Solve for x
    x = 4,068,230,860.18/72,495.60
  6. Step 6: Final answer
    x = 56,116.93

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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.