Home / 56,380.19-77,801.31-30,881.45

Finding the Fourth Proportional to 56,380.19, 77,801.31 and 30,881.45

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Solution

The fourth proportional to 56,380.19, 77,801.31 and 30,881.45 is: 42,614.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,380.19 : 77,801.31 = 30,881.45 : x
  2. Step 2: Convert to fraction form
    56,380.19/77,801.31 = 30,881.45/x
  3. Step 3: Cross multiply
    56,380.19x = 77,801.31 × 30,881.45
  4. Step 4: Simplify right side
    56,380.19x = 2,402,617,459.20
  5. Step 5: Solve for x
    x = 2,402,617,459.20/56,380.19
  6. Step 6: Final answer
    x = 42,614.57

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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.