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Finding the Fourth Proportional to 60,809.70, 91,214.55 and 34,128.30

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Solution

The fourth proportional to 60,809.70, 91,214.55 and 34,128.30 is: 51,192.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,809.70 : 91,214.55 = 34,128.30 : x
  2. Step 2: Convert to fraction form
    60,809.70/91,214.55 = 34,128.30/x
  3. Step 3: Cross multiply
    60,809.70x = 91,214.55 × 34,128.30
  4. Step 4: Simplify right side
    60,809.70x = 3,112,997,526.77
  5. Step 5: Solve for x
    x = 3,112,997,526.77/60,809.70
  6. Step 6: Final answer
    x = 51,192.45

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Similar ratio
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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.