Home / 76,477.28-105,542.28-42,485.85

Finding the Fourth Proportional to 76,477.28, 105,542.28 and 42,485.85

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Solution

The fourth proportional to 76,477.28, 105,542.28 and 42,485.85 is: 58,632.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,477.28 : 105,542.28 = 42,485.85 : x
  2. Step 2: Convert to fraction form
    76,477.28/105,542.28 = 42,485.85/x
  3. Step 3: Cross multiply
    76,477.28x = 105,542.28 × 42,485.85
  4. Step 4: Simplify right side
    76,477.28x = 4,484,053,476.74
  5. Step 5: Solve for x
    x = 4,484,053,476.74/76,477.28
  6. Step 6: Final answer
    x = 58,632.50

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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.