Home / 56,782.08-78,360.72-31,631.04

Finding the Fourth Proportional to 56,782.08, 78,360.72 and 31,631.04

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Solution

The fourth proportional to 56,782.08, 78,360.72 and 31,631.04 is: 43,651.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,782.08 : 78,360.72 = 31,631.04 : x
  2. Step 2: Convert to fraction form
    56,782.08/78,360.72 = 31,631.04/x
  3. Step 3: Cross multiply
    56,782.08x = 78,360.72 × 31,631.04
  4. Step 4: Simplify right side
    56,782.08x = 2,478,631,068.75
  5. Step 5: Solve for x
    x = 2,478,631,068.75/56,782.08
  6. Step 6: Final answer
    x = 43,651.64

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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.