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Finding the Fourth Proportional to 70,891.86, 97,831.17 and 38,626.86

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Solution

The fourth proportional to 70,891.86, 97,831.17 and 38,626.86 is: 53,305.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,891.86 : 97,831.17 = 38,626.86 : x
  2. Step 2: Convert to fraction form
    70,891.86/97,831.17 = 38,626.86/x
  3. Step 3: Cross multiply
    70,891.86x = 97,831.17 × 38,626.86
  4. Step 4: Simplify right side
    70,891.86x = 3,778,911,272.32
  5. Step 5: Solve for x
    x = 3,778,911,272.32/70,891.86
  6. Step 6: Final answer
    x = 53,305.29

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1.5x scale

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.