Home / 72,610,957.51-100,203,122.89-40,015,909.51

Finding the Fourth Proportional to 72,610,957.51, 100,203,122.89 and 40,015,909.51

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Solution

The fourth proportional to 72,610,957.51, 100,203,122.89 and 40,015,909.51 is: 55,221,955.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,610,957.51 : 100,203,122.89 = 40,015,909.51 : x
  2. Step 2: Convert to fraction form
    72,610,957.51/100,203,122.89 = 40,015,909.51/x
  3. Step 3: Cross multiply
    72,610,957.51x = 100,203,122.89 × 40,015,909.51
  4. Step 4: Simplify right side
    72,610,957.51x = 4,009,719,097,985,162
  5. Step 5: Solve for x
    x = 4,009,719,097,985,162/72,610,957.51
  6. Step 6: Final answer
    x = 55,221,955.96

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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.