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Finding the Fourth Proportional to 48,281.76, 72,424.80 and 13,220.64

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Solution

The fourth proportional to 48,281.76, 72,424.80 and 13,220.64 is: 19,831.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,281.76 : 72,424.80 = 13,220.64 : x
  2. Step 2: Convert to fraction form
    48,281.76/72,424.80 = 13,220.64/x
  3. Step 3: Cross multiply
    48,281.76x = 72,424.80 × 13,220.64
  4. Step 4: Simplify right side
    48,281.76x = 957,502,207.87
  5. Step 5: Solve for x
    x = 957,502,207.87/48,281.76
  6. Step 6: Final answer
    x = 19,831.55

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1.5x scale

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.