Home / 76,529.88-105,612.66-42,541.20

Finding the Fourth Proportional to 76,529.88, 105,612.66 and 42,541.20

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Solution

The fourth proportional to 76,529.88, 105,612.66 and 42,541.20 is: 58,707.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,529.88 : 105,612.66 = 42,541.20 : x
  2. Step 2: Convert to fraction form
    76,529.88/105,612.66 = 42,541.20/x
  3. Step 3: Cross multiply
    76,529.88x = 105,612.66 × 42,541.20
  4. Step 4: Simplify right side
    76,529.88x = 4,492,889,291.59
  5. Step 5: Solve for x
    x = 4,492,889,291.59/76,529.88
  6. Step 6: Final answer
    x = 58,707.65

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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.