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Finding the Fourth Proportional to 61,812.96, 85,312.08 and 36,679.20

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Solution

The fourth proportional to 61,812.96, 85,312.08 and 36,679.20 is: 50,623.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,812.96 : 85,312.08 = 36,679.20 : x
  2. Step 2: Convert to fraction form
    61,812.96/85,312.08 = 36,679.20/x
  3. Step 3: Cross multiply
    61,812.96x = 85,312.08 × 36,679.20
  4. Step 4: Simplify right side
    61,812.96x = 3,129,178,844.74
  5. Step 5: Solve for x
    x = 3,129,178,844.74/61,812.96
  6. Step 6: Final answer
    x = 50,623.35

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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.