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Finding the Fourth Proportional to 72,269.76, 107,680.29 and 64,412.76

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Solution

The fourth proportional to 72,269.76, 107,680.29 and 64,412.76 is: 95,973.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,269.76 : 107,680.29 = 64,412.76 : x
  2. Step 2: Convert to fraction form
    72,269.76/107,680.29 = 64,412.76/x
  3. Step 3: Cross multiply
    72,269.76x = 107,680.29 × 64,412.76
  4. Step 4: Simplify right side
    72,269.76x = 6,935,984,676.50
  5. Step 5: Solve for x
    x = 6,935,984,676.50/72,269.76
  6. Step 6: Final answer
    x = 95,973.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.