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Finding the Fourth Proportional to 72,495.48, 100,048.74 and 40,666.41

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Solution

The fourth proportional to 72,495.48, 100,048.74 and 40,666.41 is: 56,122.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,495.48 : 100,048.74 = 40,666.41 : x
  2. Step 2: Convert to fraction form
    72,495.48/100,048.74 = 40,666.41/x
  3. Step 3: Cross multiply
    72,495.48x = 100,048.74 × 40,666.41
  4. Step 4: Simplify right side
    72,495.48x = 4,068,623,080.82
  5. Step 5: Solve for x
    x = 4,068,623,080.82/72,495.48
  6. Step 6: Final answer
    x = 56,122.44

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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.