Home / 76,281.72-105,264.54-42,289.08

Finding the Fourth Proportional to 76,281.72, 105,264.54 and 42,289.08

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Solution

The fourth proportional to 76,281.72, 105,264.54 and 42,289.08 is: 58,356.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,281.72 : 105,264.54 = 42,289.08 : x
  2. Step 2: Convert to fraction form
    76,281.72/105,264.54 = 42,289.08/x
  3. Step 3: Cross multiply
    76,281.72x = 105,264.54 × 42,289.08
  4. Step 4: Simplify right side
    76,281.72x = 4,451,540,553.22
  5. Step 5: Solve for x
    x = 4,451,540,553.22/76,281.72
  6. Step 6: Final answer
    x = 58,356.58

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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.