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Finding the Fourth Proportional to 72,483,710.76, 100,027,535.04 and 39,888,662.76

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Solution

The fourth proportional to 72,483,710.76, 100,027,535.04 and 39,888,662.76 is: 55,046,362.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,483,710.76 : 100,027,535.04 = 39,888,662.76 : x
  2. Step 2: Convert to fraction form
    72,483,710.76/100,027,535.04 = 39,888,662.76/x
  3. Step 3: Cross multiply
    72,483,710.76x = 100,027,535.04 × 39,888,662.76
  4. Step 4: Simplify right side
    72,483,710.76x = 3,989,964,611,924,643
  5. Step 5: Solve for x
    x = 3,989,964,611,924,643/72,483,710.76
  6. Step 6: Final answer
    x = 55,046,362.42

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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.