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Finding the Fourth Proportional to 56,700.61, 78,245.70 and 35,491.57

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Solution

The fourth proportional to 56,700.61, 78,245.70 and 35,491.57 is: 48,977.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,700.61 : 78,245.70 = 35,491.57 : x
  2. Step 2: Convert to fraction form
    56,700.61/78,245.70 = 35,491.57/x
  3. Step 3: Cross multiply
    56,700.61x = 78,245.70 × 35,491.57
  4. Step 4: Simplify right side
    56,700.61x = 2,777,062,410.04
  5. Step 5: Solve for x
    x = 2,777,062,410.04/56,700.61
  6. Step 6: Final answer
    x = 48,977.65

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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.