Home / 76,117.30-105,142.27-58,430.86

Finding the Fourth Proportional to 76,117.30, 105,142.27 and 58,430.86

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Solution

The fourth proportional to 76,117.30, 105,142.27 and 58,430.86 is: 80,711.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,117.30 : 105,142.27 = 58,430.86 : x
  2. Step 2: Convert to fraction form
    76,117.30/105,142.27 = 58,430.86/x
  3. Step 3: Cross multiply
    76,117.30x = 105,142.27 × 58,430.86
  4. Step 4: Simplify right side
    76,117.30x = 6,143,552,586.66
  5. Step 5: Solve for x
    x = 6,143,552,586.66/76,117.30
  6. Step 6: Final answer
    x = 80,711.65

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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.