Home / 56,985.40-78,639.78-31,834.90

Finding the Fourth Proportional to 56,985.40, 78,639.78 and 31,834.90

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Solution

The fourth proportional to 56,985.40, 78,639.78 and 31,834.90 is: 43,932.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,985.40 : 78,639.78 = 31,834.90 : x
  2. Step 2: Convert to fraction form
    56,985.40/78,639.78 = 31,834.90/x
  3. Step 3: Cross multiply
    56,985.40x = 78,639.78 × 31,834.90
  4. Step 4: Simplify right side
    56,985.40x = 2,503,489,532.32
  5. Step 5: Solve for x
    x = 2,503,489,532.32/56,985.40
  6. Step 6: Final answer
    x = 43,932.12

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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.