Home / 76,743.77-105,904.80-42,752.21

Finding the Fourth Proportional to 76,743.77, 105,904.80 and 42,752.21

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Solution

The fourth proportional to 76,743.77, 105,904.80 and 42,752.21 is: 58,997.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,743.77 : 105,904.80 = 42,752.21 : x
  2. Step 2: Convert to fraction form
    76,743.77/105,904.80 = 42,752.21/x
  3. Step 3: Cross multiply
    76,743.77x = 105,904.80 × 42,752.21
  4. Step 4: Simplify right side
    76,743.77x = 4,527,663,720.08
  5. Step 5: Solve for x
    x = 4,527,663,720.08/76,743.77
  6. Step 6: Final answer
    x = 58,997.15

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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.