Home / 76,633.28-105,750.12-42,643.76

Finding the Fourth Proportional to 76,633.28, 105,750.12 and 42,643.76

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Solution

The fourth proportional to 76,633.28, 105,750.12 and 42,643.76 is: 58,846.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,633.28 : 105,750.12 = 42,643.76 : x
  2. Step 2: Convert to fraction form
    76,633.28/105,750.12 = 42,643.76/x
  3. Step 3: Cross multiply
    76,633.28x = 105,750.12 × 42,643.76
  4. Step 4: Simplify right side
    76,633.28x = 4,509,582,737.25
  5. Step 5: Solve for x
    x = 4,509,582,737.25/76,633.28
  6. Step 6: Final answer
    x = 58,846.27

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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.