Home / 76,420.22-105,455.14-42,426.72

Finding the Fourth Proportional to 76,420.22, 105,455.14 and 42,426.72

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Solution

The fourth proportional to 76,420.22, 105,455.14 and 42,426.72 is: 58,546.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,420.22 : 105,455.14 = 42,426.72 : x
  2. Step 2: Convert to fraction form
    76,420.22/105,455.14 = 42,426.72/x
  3. Step 3: Cross multiply
    76,420.22x = 105,455.14 × 42,426.72
  4. Step 4: Simplify right side
    76,420.22x = 4,474,115,697.34
  5. Step 5: Solve for x
    x = 4,474,115,697.34/76,420.22
  6. Step 6: Final answer
    x = 58,546.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.