Home / 77,670,981-107,185,734.08-42,863,422.56

Finding the Fourth Proportional to 77,670,981, 107,185,734.08 and 42,863,422.56

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Solution

The fourth proportional to 77,670,981, 107,185,734.08 and 42,863,422.56 is: 59,151,401.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,670,981 : 107,185,734.08 = 42,863,422.56 : x
  2. Step 2: Convert to fraction form
    77,670,981/107,185,734.08 = 42,863,422.56/x
  3. Step 3: Cross multiply
    77,670,981x = 107,185,734.08 × 42,863,422.56
  4. Step 4: Simplify right side
    77,670,981x = 4,594,347,412,274,833
  5. Step 5: Solve for x
    x = 4,594,347,412,274,833/77,670,981
  6. Step 6: Final answer
    x = 59,151,401.89

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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.