Home / 89,428.34-133,967.20-51,909.76

Finding the Fourth Proportional to 89,428.34, 133,967.20 and 51,909.76

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Solution

The fourth proportional to 89,428.34, 133,967.20 and 51,909.76 is: 77,762.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,428.34 : 133,967.20 = 51,909.76 : x
  2. Step 2: Convert to fraction form
    89,428.34/133,967.20 = 51,909.76/x
  3. Step 3: Cross multiply
    89,428.34x = 133,967.20 × 51,909.76
  4. Step 4: Simplify right side
    89,428.34x = 6,954,205,199.87
  5. Step 5: Solve for x
    x = 6,954,205,199.87/89,428.34
  6. Step 6: Final answer
    x = 77,762.88

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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.