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Finding the Fourth Proportional to 71,475.20, 107,212.80 and 59,897.60

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Solution

The fourth proportional to 71,475.20, 107,212.80 and 59,897.60 is: 89,846.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,475.20 : 107,212.80 = 59,897.60 : x
  2. Step 2: Convert to fraction form
    71,475.20/107,212.80 = 59,897.60/x
  3. Step 3: Cross multiply
    71,475.20x = 107,212.80 × 59,897.60
  4. Step 4: Simplify right side
    71,475.20x = 6,421,789,409.28
  5. Step 5: Solve for x
    x = 6,421,789,409.28/71,475.20
  6. Step 6: Final answer
    x = 89,846.40

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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.