Home / 56,718.68-78,140.74-40,775.56

Finding the Fourth Proportional to 56,718.68, 78,140.74 and 40,775.56

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Solution

The fourth proportional to 56,718.68, 78,140.74 and 40,775.56 is: 56,176.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,718.68 : 78,140.74 = 40,775.56 : x
  2. Step 2: Convert to fraction form
    56,718.68/78,140.74 = 40,775.56/x
  3. Step 3: Cross multiply
    56,718.68x = 78,140.74 × 40,775.56
  4. Step 4: Simplify right side
    56,718.68x = 3,186,232,432.31
  5. Step 5: Solve for x
    x = 3,186,232,432.31/56,718.68
  6. Step 6: Final answer
    x = 56,176.07

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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.