Home / 47,434.60-71,130.30-21,125.80

Finding the Fourth Proportional to 47,434.60, 71,130.30 and 21,125.80

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Solution

The fourth proportional to 47,434.60, 71,130.30 and 21,125.80 is: 31,679.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,434.60 : 71,130.30 = 21,125.80 : x
  2. Step 2: Convert to fraction form
    47,434.60/71,130.30 = 21,125.80/x
  3. Step 3: Cross multiply
    47,434.60x = 71,130.30 × 21,125.80
  4. Step 4: Simplify right side
    47,434.60x = 1,502,684,491.74
  5. Step 5: Solve for x
    x = 1,502,684,491.74/47,434.60
  6. Step 6: Final answer
    x = 31,679.08

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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.