Home / 56,896.45-78,516.95-31,402.78

Finding the Fourth Proportional to 56,896.45, 78,516.95 and 31,402.78

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Solution

The fourth proportional to 56,896.45, 78,516.95 and 31,402.78 is: 43,335.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,896.45 : 78,516.95 = 31,402.78 : x
  2. Step 2: Convert to fraction form
    56,896.45/78,516.95 = 31,402.78/x
  3. Step 3: Cross multiply
    56,896.45x = 78,516.95 × 31,402.78
  4. Step 4: Simplify right side
    56,896.45x = 2,465,650,153.81
  5. Step 5: Solve for x
    x = 2,465,650,153.81/56,896.45
  6. Step 6: Final answer
    x = 43,335.75

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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.