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Finding the Fourth Proportional to 59,709.60, 89,129.40 and 53,119.20

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Solution

The fourth proportional to 59,709.60, 89,129.40 and 53,119.20 is: 79,291.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,709.60 : 89,129.40 = 53,119.20 : x
  2. Step 2: Convert to fraction form
    59,709.60/89,129.40 = 53,119.20/x
  3. Step 3: Cross multiply
    59,709.60x = 89,129.40 × 53,119.20
  4. Step 4: Simplify right side
    59,709.60x = 4,734,482,424.48
  5. Step 5: Solve for x
    x = 4,734,482,424.48/59,709.60
  6. Step 6: Final answer
    x = 79,291.81

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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.