Home / 76,117.17-105,142.10-58,430.73

Finding the Fourth Proportional to 76,117.17, 105,142.10 and 58,430.73

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Solution

The fourth proportional to 76,117.17, 105,142.10 and 58,430.73 is: 80,711.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,117.17 : 105,142.10 = 58,430.73 : x
  2. Step 2: Convert to fraction form
    76,117.17/105,142.10 = 58,430.73/x
  3. Step 3: Cross multiply
    76,117.17x = 105,142.10 × 58,430.73
  4. Step 4: Simplify right side
    76,117.17x = 6,143,529,364.58
  5. Step 5: Solve for x
    x = 6,143,529,364.58/76,117.17
  6. Step 6: Final answer
    x = 80,711.48

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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.