Home / 86,254,919.28-129,422,781.93-42,511,831.81

Finding the Fourth Proportional to 86,254,919.28, 129,422,781.93 and 42,511,831.81

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Solution

The fourth proportional to 86,254,919.28, 129,422,781.93 and 42,511,831.81 is: 63,787,660.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,254,919.28 : 129,422,781.93 = 42,511,831.81 : x
  2. Step 2: Convert to fraction form
    86,254,919.28/129,422,781.93 = 42,511,831.81/x
  3. Step 3: Cross multiply
    86,254,919.28x = 129,422,781.93 × 42,511,831.81
  4. Step 4: Simplify right side
    86,254,919.28x = 5,501,999,538,073,728
  5. Step 5: Solve for x
    x = 5,501,999,538,073,728/86,254,919.28
  6. Step 6: Final answer
    x = 63,787,660.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.