Home / 88,931.76-122,729.76-51,218.16

Finding the Fourth Proportional to 88,931.76, 122,729.76 and 51,218.16

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Solution

The fourth proportional to 88,931.76, 122,729.76 and 51,218.16 is: 70,683.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,931.76 : 122,729.76 = 51,218.16 : x
  2. Step 2: Convert to fraction form
    88,931.76/122,729.76 = 51,218.16/x
  3. Step 3: Cross multiply
    88,931.76x = 122,729.76 × 51,218.16
  4. Step 4: Simplify right side
    88,931.76x = 6,285,992,484.44
  5. Step 5: Solve for x
    x = 6,285,992,484.44/88,931.76
  6. Step 6: Final answer
    x = 70,683.32

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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.