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Finding the Fourth Proportional to 84,390.77, 116,405.43 and 64,203.41

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Solution

The fourth proportional to 84,390.77, 116,405.43 and 64,203.41 is: 88,559.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,390.77 : 116,405.43 = 64,203.41 : x
  2. Step 2: Convert to fraction form
    84,390.77/116,405.43 = 64,203.41/x
  3. Step 3: Cross multiply
    84,390.77x = 116,405.43 × 64,203.41
  4. Step 4: Simplify right side
    84,390.77x = 7,473,625,548.52
  5. Step 5: Solve for x
    x = 7,473,625,548.52/84,390.77
  6. Step 6: Final answer
    x = 88,559.75

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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.