Home / 76,325.40-105,381.18-47,688.66

Finding the Fourth Proportional to 76,325.40, 105,381.18 and 47,688.66

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Solution

The fourth proportional to 76,325.40, 105,381.18 and 47,688.66 is: 65,842.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,325.40 : 105,381.18 = 47,688.66 : x
  2. Step 2: Convert to fraction form
    76,325.40/105,381.18 = 47,688.66/x
  3. Step 3: Cross multiply
    76,325.40x = 105,381.18 × 47,688.66
  4. Step 4: Simplify right side
    76,325.40x = 5,025,487,263.42
  5. Step 5: Solve for x
    x = 5,025,487,263.42/76,325.40
  6. Step 6: Final answer
    x = 65,842.92

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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.