Home / 64,690.11-89,271.64-36,009.63

Finding the Fourth Proportional to 64,690.11, 89,271.64 and 36,009.63

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Solution

The fourth proportional to 64,690.11, 89,271.64 and 36,009.63 is: 49,692.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,690.11 : 89,271.64 = 36,009.63 : x
  2. Step 2: Convert to fraction form
    64,690.11/89,271.64 = 36,009.63/x
  3. Step 3: Cross multiply
    64,690.11x = 89,271.64 × 36,009.63
  4. Step 4: Simplify right side
    64,690.11x = 3,214,638,189.51
  5. Step 5: Solve for x
    x = 3,214,638,189.51/64,690.11
  6. Step 6: Final answer
    x = 49,692.89

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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.