Home / 56,870.24-78,485.38-31,381.66

Finding the Fourth Proportional to 56,870.24, 78,485.38 and 31,381.66

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Solution

The fourth proportional to 56,870.24, 78,485.38 and 31,381.66 is: 43,309.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,870.24 : 78,485.38 = 31,381.66 : x
  2. Step 2: Convert to fraction form
    56,870.24/78,485.38 = 31,381.66/x
  3. Step 3: Cross multiply
    56,870.24x = 78,485.38 × 31,381.66
  4. Step 4: Simplify right side
    56,870.24x = 2,463,001,235.46
  5. Step 5: Solve for x
    x = 2,463,001,235.46/56,870.24
  6. Step 6: Final answer
    x = 43,309.14

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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.