Home / 76,789.04-105,977.48-42,800.63

Finding the Fourth Proportional to 76,789.04, 105,977.48 and 42,800.63

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Solution

The fourth proportional to 76,789.04, 105,977.48 and 42,800.63 is: 59,069.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,789.04 : 105,977.48 = 42,800.63 : x
  2. Step 2: Convert to fraction form
    76,789.04/105,977.48 = 42,800.63/x
  3. Step 3: Cross multiply
    76,789.04x = 105,977.48 × 42,800.63
  4. Step 4: Simplify right side
    76,789.04x = 4,535,902,165.92
  5. Step 5: Solve for x
    x = 4,535,902,165.92/76,789.04
  6. Step 6: Final answer
    x = 59,069.66

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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.