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Finding the Fourth Proportional to 84,900.64, 116,894.40 and 64,692.64

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Solution

The fourth proportional to 84,900.64, 116,894.40 and 64,692.64 is: 89,071.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,900.64 : 116,894.40 = 64,692.64 : x
  2. Step 2: Convert to fraction form
    84,900.64/116,894.40 = 64,692.64/x
  3. Step 3: Cross multiply
    84,900.64x = 116,894.40 × 64,692.64
  4. Step 4: Simplify right side
    84,900.64x = 7,562,207,337.22
  5. Step 5: Solve for x
    x = 7,562,207,337.22/84,900.64
  6. Step 6: Final answer
    x = 89,071.26

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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.