Home / 42,762.60-64,134.18-20,562.12

Finding the Fourth Proportional to 42,762.60, 64,134.18 and 20,562.12

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Solution

The fourth proportional to 42,762.60, 64,134.18 and 20,562.12 is: 30,838.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,762.60 : 64,134.18 = 20,562.12 : x
  2. Step 2: Convert to fraction form
    42,762.60/64,134.18 = 20,562.12/x
  3. Step 3: Cross multiply
    42,762.60x = 64,134.18 × 20,562.12
  4. Step 4: Simplify right side
    42,762.60x = 1,318,734,705.26
  5. Step 5: Solve for x
    x = 1,318,734,705.26/42,762.60
  6. Step 6: Final answer
    x = 30,838.51

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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.