Home / 45,803.61-68,740.38-20,510.91

Finding the Fourth Proportional to 45,803.61, 68,740.38 and 20,510.91

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Solution

The fourth proportional to 45,803.61, 68,740.38 and 20,510.91 is: 30,782.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,803.61 : 68,740.38 = 20,510.91 : x
  2. Step 2: Convert to fraction form
    45,803.61/68,740.38 = 20,510.91/x
  3. Step 3: Cross multiply
    45,803.61x = 68,740.38 × 20,510.91
  4. Step 4: Simplify right side
    45,803.61x = 1,409,927,747.55
  5. Step 5: Solve for x
    x = 1,409,927,747.55/45,803.61
  6. Step 6: Final answer
    x = 30,782.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.