Home / 85,820.04-128,756.93-38,474.83

Finding the Fourth Proportional to 85,820.04, 128,756.93 and 38,474.83

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Solution

The fourth proportional to 85,820.04, 128,756.93 and 38,474.83 is: 57,724.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,820.04 : 128,756.93 = 38,474.83 : x
  2. Step 2: Convert to fraction form
    85,820.04/128,756.93 = 38,474.83/x
  3. Step 3: Cross multiply
    85,820.04x = 128,756.93 × 38,474.83
  4. Step 4: Simplify right side
    85,820.04x = 4,953,900,993.07
  5. Step 5: Solve for x
    x = 4,953,900,993.07/85,820.04
  6. Step 6: Final answer
    x = 57,724.29

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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.