Home / 72,582.61-108,831.53-28,157.45

Finding the Fourth Proportional to 72,582.61, 108,831.53 and 28,157.45

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Solution

The fourth proportional to 72,582.61, 108,831.53 and 28,157.45 is: 42,219.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,582.61 : 108,831.53 = 28,157.45 : x
  2. Step 2: Convert to fraction form
    72,582.61/108,831.53 = 28,157.45/x
  3. Step 3: Cross multiply
    72,582.61x = 108,831.53 × 28,157.45
  4. Step 4: Simplify right side
    72,582.61x = 3,064,418,364.40
  5. Step 5: Solve for x
    x = 3,064,418,364.40/72,582.61
  6. Step 6: Final answer
    x = 42,219.73

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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.