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Finding the Fourth Proportional to 67,782.40, 93,572.80 and 45,134.80

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Solution

The fourth proportional to 67,782.40, 93,572.80 and 45,134.80 is: 62,308.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,782.40 : 93,572.80 = 45,134.80 : x
  2. Step 2: Convert to fraction form
    67,782.40/93,572.80 = 45,134.80/x
  3. Step 3: Cross multiply
    67,782.40x = 93,572.80 × 45,134.80
  4. Step 4: Simplify right side
    67,782.40x = 4,223,389,613.44
  5. Step 5: Solve for x
    x = 4,223,389,613.44/67,782.40
  6. Step 6: Final answer
    x = 62,308.06

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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.