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Finding the Fourth Proportional to 72,482,815.01, 100,026,301.03 and 39,887,767.01

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Solution

The fourth proportional to 72,482,815.01, 100,026,301.03 and 39,887,767.01 is: 55,045,127.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,482,815.01 : 100,026,301.03 = 39,887,767.01 : x
  2. Step 2: Convert to fraction form
    72,482,815.01/100,026,301.03 = 39,887,767.01/x
  3. Step 3: Cross multiply
    72,482,815.01x = 100,026,301.03 × 39,887,767.01
  4. Step 4: Simplify right side
    72,482,815.01x = 3,989,825,790,356,763
  5. Step 5: Solve for x
    x = 3,989,825,790,356,763/72,482,815.01
  6. Step 6: Final answer
    x = 55,045,127.45

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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.