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Finding the Fourth Proportional to 56,710.40, 85,065.60 and 37,011.20

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Solution

The fourth proportional to 56,710.40, 85,065.60 and 37,011.20 is: 55,516.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,710.40 : 85,065.60 = 37,011.20 : x
  2. Step 2: Convert to fraction form
    56,710.40/85,065.60 = 37,011.20/x
  3. Step 3: Cross multiply
    56,710.40x = 85,065.60 × 37,011.20
  4. Step 4: Simplify right side
    56,710.40x = 3,148,379,934.72
  5. Step 5: Solve for x
    x = 3,148,379,934.72/56,710.40
  6. Step 6: Final answer
    x = 55,516.80

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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.