Home / 56,581.04-78,084.60-31,430

Finding the Fourth Proportional to 56,581.04, 78,084.60 and 31,430

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Solution

The fourth proportional to 56,581.04, 78,084.60 and 31,430 is: 43,374.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,581.04 : 78,084.60 = 31,430 : x
  2. Step 2: Convert to fraction form
    56,581.04/78,084.60 = 31,430/x
  3. Step 3: Cross multiply
    56,581.04x = 78,084.60 × 31,430
  4. Step 4: Simplify right side
    56,581.04x = 2,454,198,978
  5. Step 5: Solve for x
    x = 2,454,198,978/56,581.04
  6. Step 6: Final answer
    x = 43,374.94

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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.