Home / 56,720.36-78,264.42-31,565

Finding the Fourth Proportional to 56,720.36, 78,264.42 and 31,565

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Solution

The fourth proportional to 56,720.36, 78,264.42 and 31,565 is: 43,554.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,720.36 : 78,264.42 = 31,565 : x
  2. Step 2: Convert to fraction form
    56,720.36/78,264.42 = 31,565/x
  3. Step 3: Cross multiply
    56,720.36x = 78,264.42 × 31,565
  4. Step 4: Simplify right side
    56,720.36x = 2,470,416,417.30
  5. Step 5: Solve for x
    x = 2,470,416,417.30/56,720.36
  6. Step 6: Final answer
    x = 43,554.31

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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.