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Finding the Fourth Proportional to 64,211.90, 96,317.85 and 39,328.70

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Solution

The fourth proportional to 64,211.90, 96,317.85 and 39,328.70 is: 58,993.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,211.90 : 96,317.85 = 39,328.70 : x
  2. Step 2: Convert to fraction form
    64,211.90/96,317.85 = 39,328.70/x
  3. Step 3: Cross multiply
    64,211.90x = 96,317.85 × 39,328.70
  4. Step 4: Simplify right side
    64,211.90x = 3,788,055,827.30
  5. Step 5: Solve for x
    x = 3,788,055,827.30/64,211.90
  6. Step 6: Final answer
    x = 58,993.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.