Home / 76,421.62-105,457.70-42,427.91

Finding the Fourth Proportional to 76,421.62, 105,457.70 and 42,427.91

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Solution

The fourth proportional to 76,421.62, 105,457.70 and 42,427.91 is: 58,548.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,421.62 : 105,457.70 = 42,427.91 : x
  2. Step 2: Convert to fraction form
    76,421.62/105,457.70 = 42,427.91/x
  3. Step 3: Cross multiply
    76,421.62x = 105,457.70 × 42,427.91
  4. Step 4: Simplify right side
    76,421.62x = 4,474,350,174.12
  5. Step 5: Solve for x
    x = 4,474,350,174.12/76,421.62
  6. Step 6: Final answer
    x = 58,548.22

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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.