Home / 56,931.84-78,565.95-31,781.34

Finding the Fourth Proportional to 56,931.84, 78,565.95 and 31,781.34

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Solution

The fourth proportional to 56,931.84, 78,565.95 and 31,781.34 is: 43,858.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,931.84 : 78,565.95 = 31,781.34 : x
  2. Step 2: Convert to fraction form
    56,931.84/78,565.95 = 31,781.34/x
  3. Step 3: Cross multiply
    56,931.84x = 78,565.95 × 31,781.34
  4. Step 4: Simplify right side
    56,931.84x = 2,496,931,169.37
  5. Step 5: Solve for x
    x = 2,496,931,169.37/56,931.84
  6. Step 6: Final answer
    x = 43,858.26

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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.