Home / 72,771.46-100,439.55-42,564.21

Finding the Fourth Proportional to 72,771.46, 100,439.55 and 42,564.21

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Solution

The fourth proportional to 72,771.46, 100,439.55 and 42,564.21 is: 58,747.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,771.46 : 100,439.55 = 42,564.21 : x
  2. Step 2: Convert to fraction form
    72,771.46/100,439.55 = 42,564.21/x
  3. Step 3: Cross multiply
    72,771.46x = 100,439.55 × 42,564.21
  4. Step 4: Simplify right side
    72,771.46x = 4,275,130,098.51
  5. Step 5: Solve for x
    x = 4,275,130,098.51/72,771.46
  6. Step 6: Final answer
    x = 58,747.35

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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.