Home / 51,430.20-77,145.30-47,743.80

Finding the Fourth Proportional to 51,430.20, 77,145.30 and 47,743.80

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Solution

The fourth proportional to 51,430.20, 77,145.30 and 47,743.80 is: 71,615.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,430.20 : 77,145.30 = 47,743.80 : x
  2. Step 2: Convert to fraction form
    51,430.20/77,145.30 = 47,743.80/x
  3. Step 3: Cross multiply
    51,430.20x = 77,145.30 × 47,743.80
  4. Step 4: Simplify right side
    51,430.20x = 3,683,209,774.14
  5. Step 5: Solve for x
    x = 3,683,209,774.14/51,430.20
  6. Step 6: Final answer
    x = 71,615.70

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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.