Home / 65,479.46-90,337.95-42,831.36

Finding the Fourth Proportional to 65,479.46, 90,337.95 and 42,831.36

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Solution

The fourth proportional to 65,479.46, 90,337.95 and 42,831.36 is: 59,091.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,479.46 : 90,337.95 = 42,831.36 : x
  2. Step 2: Convert to fraction form
    65,479.46/90,337.95 = 42,831.36/x
  3. Step 3: Cross multiply
    65,479.46x = 90,337.95 × 42,831.36
  4. Step 4: Simplify right side
    65,479.46x = 3,869,297,258.11
  5. Step 5: Solve for x
    x = 3,869,297,258.11/65,479.46
  6. Step 6: Final answer
    x = 59,091.78

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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.