Home / 76,390,139.76-105,440,655.96-49,932,340.08

Finding the Fourth Proportional to 76,390,139.76, 105,440,655.96 and 49,932,340.08

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Solution

The fourth proportional to 76,390,139.76, 105,440,655.96 and 49,932,340.08 is: 68,921,181.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,390,139.76 : 105,440,655.96 = 49,932,340.08 : x
  2. Step 2: Convert to fraction form
    76,390,139.76/105,440,655.96 = 49,932,340.08/x
  3. Step 3: Cross multiply
    76,390,139.76x = 105,440,655.96 × 49,932,340.08
  4. Step 4: Simplify right side
    76,390,139.76x = 5,264,898,691,652,998
  5. Step 5: Solve for x
    x = 5,264,898,691,652,998/76,390,139.76
  6. Step 6: Final answer
    x = 68,921,181.56

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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.