Home / 57,225.78-78,976.20-31,740.12

Finding the Fourth Proportional to 57,225.78, 78,976.20 and 31,740.12

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Solution

The fourth proportional to 57,225.78, 78,976.20 and 31,740.12 is: 43,803.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,225.78 : 78,976.20 = 31,740.12 : x
  2. Step 2: Convert to fraction form
    57,225.78/78,976.20 = 31,740.12/x
  3. Step 3: Cross multiply
    57,225.78x = 78,976.20 × 31,740.12
  4. Step 4: Simplify right side
    57,225.78x = 2,506,714,065.14
  5. Step 5: Solve for x
    x = 2,506,714,065.14/57,225.78
  6. Step 6: Final answer
    x = 43,803.93

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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.