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Finding the Fourth Proportional to 56,981.90, 85,491.84 and 35,897.60

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Solution

The fourth proportional to 56,981.90, 85,491.84 and 35,897.60 is: 53,858.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,981.90 : 85,491.84 = 35,897.60 : x
  2. Step 2: Convert to fraction form
    56,981.90/85,491.84 = 35,897.60/x
  3. Step 3: Cross multiply
    56,981.90x = 85,491.84 × 35,897.60
  4. Step 4: Simplify right side
    56,981.90x = 3,068,951,875.58
  5. Step 5: Solve for x
    x = 3,068,951,875.58/56,981.90
  6. Step 6: Final answer
    x = 53,858.36

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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.