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Finding the Fourth Proportional to 64,390.67, 88,844.19 and 55,877.76

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Solution

The fourth proportional to 64,390.67, 88,844.19 and 55,877.76 is: 77,098.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,390.67 : 88,844.19 = 55,877.76 : x
  2. Step 2: Convert to fraction form
    64,390.67/88,844.19 = 55,877.76/x
  3. Step 3: Cross multiply
    64,390.67x = 88,844.19 × 55,877.76
  4. Step 4: Simplify right side
    64,390.67x = 4,964,414,326.21
  5. Step 5: Solve for x
    x = 4,964,414,326.21/64,390.67
  6. Step 6: Final answer
    x = 77,098.35

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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.