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Finding the Fourth Proportional to 57,320.60, 85,980.90 and 43,323.80

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Solution

The fourth proportional to 57,320.60, 85,980.90 and 43,323.80 is: 64,985.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,320.60 : 85,980.90 = 43,323.80 : x
  2. Step 2: Convert to fraction form
    57,320.60/85,980.90 = 43,323.80/x
  3. Step 3: Cross multiply
    57,320.60x = 85,980.90 × 43,323.80
  4. Step 4: Simplify right side
    57,320.60x = 3,725,019,315.42
  5. Step 5: Solve for x
    x = 3,725,019,315.42/57,320.60
  6. Step 6: Final answer
    x = 64,985.70

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Similar ratio
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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.