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Finding the Fourth Proportional to 64,853.85, 89,484.64 and 39,373.62

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Solution

The fourth proportional to 64,853.85, 89,484.64 and 39,373.62 is: 54,327.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,853.85 : 89,484.64 = 39,373.62 : x
  2. Step 2: Convert to fraction form
    64,853.85/89,484.64 = 39,373.62/x
  3. Step 3: Cross multiply
    64,853.85x = 89,484.64 × 39,373.62
  4. Step 4: Simplify right side
    64,853.85x = 3,523,334,211.20
  5. Step 5: Solve for x
    x = 3,523,334,211.20/64,853.85
  6. Step 6: Final answer
    x = 54,327.29

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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.