Home / 56,931.67-78,565.26-31,439.62

Finding the Fourth Proportional to 56,931.67, 78,565.26 and 31,439.62

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Solution

The fourth proportional to 56,931.67, 78,565.26 and 31,439.62 is: 43,386.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,931.67 : 78,565.26 = 31,439.62 : x
  2. Step 2: Convert to fraction form
    56,931.67/78,565.26 = 31,439.62/x
  3. Step 3: Cross multiply
    56,931.67x = 78,565.26 × 31,439.62
  4. Step 4: Simplify right side
    56,931.67x = 2,470,061,919.60
  5. Step 5: Solve for x
    x = 2,470,061,919.60/56,931.67
  6. Step 6: Final answer
    x = 43,386.43

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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.