Home / 88,211.76-121,685.60-55,889.32

Finding the Fourth Proportional to 88,211.76, 121,685.60 and 55,889.32

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Solution

The fourth proportional to 88,211.76, 121,685.60 and 55,889.32 is: 77,097.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,211.76 : 121,685.60 = 55,889.32 : x
  2. Step 2: Convert to fraction form
    88,211.76/121,685.60 = 55,889.32/x
  3. Step 3: Cross multiply
    88,211.76x = 121,685.60 × 55,889.32
  4. Step 4: Simplify right side
    88,211.76x = 6,800,925,437.79
  5. Step 5: Solve for x
    x = 6,800,925,437.79/88,211.76
  6. Step 6: Final answer
    x = 77,097.72

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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.