Home / 72,666,072.86-100,281,601.38-39,628,124.54

Finding the Fourth Proportional to 72,666,072.86, 100,281,601.38 and 39,628,124.54

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Solution

The fourth proportional to 72,666,072.86, 100,281,601.38 and 39,628,124.54 is: 54,688,132.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,666,072.86 : 100,281,601.38 = 39,628,124.54 : x
  2. Step 2: Convert to fraction form
    72,666,072.86/100,281,601.38 = 39,628,124.54/x
  3. Step 3: Cross multiply
    72,666,072.86x = 100,281,601.38 × 39,628,124.54
  4. Step 4: Simplify right side
    72,666,072.86x = 3,973,971,788,557,275.50
  5. Step 5: Solve for x
    x = 3,973,971,788,557,275.50/72,666,072.86
  6. Step 6: Final answer
    x = 54,688,132.06

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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.