Home / 76,791.20-105,972.91-42,798.74

Finding the Fourth Proportional to 76,791.20, 105,972.91 and 42,798.74

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Solution

The fourth proportional to 76,791.20, 105,972.91 and 42,798.74 is: 59,062.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,791.20 : 105,972.91 = 42,798.74 : x
  2. Step 2: Convert to fraction form
    76,791.20/105,972.91 = 42,798.74/x
  3. Step 3: Cross multiply
    76,791.20x = 105,972.91 × 42,798.74
  4. Step 4: Simplify right side
    76,791.20x = 4,535,506,492.27
  5. Step 5: Solve for x
    x = 4,535,506,492.27/76,791.20
  6. Step 6: Final answer
    x = 59,062.85

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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.