Home / 56,901.08-78,517.50-31,406.96

Finding the Fourth Proportional to 56,901.08, 78,517.50 and 31,406.96

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Solution

The fourth proportional to 56,901.08, 78,517.50 and 31,406.96 is: 43,338.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,901.08 : 78,517.50 = 31,406.96 : x
  2. Step 2: Convert to fraction form
    56,901.08/78,517.50 = 31,406.96/x
  3. Step 3: Cross multiply
    56,901.08x = 78,517.50 × 31,406.96
  4. Step 4: Simplify right side
    56,901.08x = 2,465,995,981.80
  5. Step 5: Solve for x
    x = 2,465,995,981.80/56,901.08
  6. Step 6: Final answer
    x = 43,338.30

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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.