Home / 56,513.72-77,985.42-31,362.68

Finding the Fourth Proportional to 56,513.72, 77,985.42 and 31,362.68

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Solution

The fourth proportional to 56,513.72, 77,985.42 and 31,362.68 is: 43,278.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,513.72 : 77,985.42 = 31,362.68 : x
  2. Step 2: Convert to fraction form
    56,513.72/77,985.42 = 31,362.68/x
  3. Step 3: Cross multiply
    56,513.72x = 77,985.42 × 31,362.68
  4. Step 4: Simplify right side
    56,513.72x = 2,445,831,772.13
  5. Step 5: Solve for x
    x = 2,445,831,772.13/56,513.72
  6. Step 6: Final answer
    x = 43,278.55

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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.