Home / 90,281.04-135,349.26-42,872.14

Finding the Fourth Proportional to 90,281.04, 135,349.26 and 42,872.14

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Solution

The fourth proportional to 90,281.04, 135,349.26 and 42,872.14 is: 64,273.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,281.04 : 135,349.26 = 42,872.14 : x
  2. Step 2: Convert to fraction form
    90,281.04/135,349.26 = 42,872.14/x
  3. Step 3: Cross multiply
    90,281.04x = 135,349.26 × 42,872.14
  4. Step 4: Simplify right side
    90,281.04x = 5,802,712,423.62
  5. Step 5: Solve for x
    x = 5,802,712,423.62/90,281.04
  6. Step 6: Final answer
    x = 64,273.88

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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.