Home / 70,421.12-97,181.20-42,133.52

Finding the Fourth Proportional to 70,421.12, 97,181.20 and 42,133.52

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Solution

The fourth proportional to 70,421.12, 97,181.20 and 42,133.52 is: 58,144.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,421.12 : 97,181.20 = 42,133.52 : x
  2. Step 2: Convert to fraction form
    70,421.12/97,181.20 = 42,133.52/x
  3. Step 3: Cross multiply
    70,421.12x = 97,181.20 × 42,133.52
  4. Step 4: Simplify right side
    70,421.12x = 4,094,586,033.82
  5. Step 5: Solve for x
    x = 4,094,586,033.82/70,421.12
  6. Step 6: Final answer
    x = 58,144.29

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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.