Home / 81,784.88-112,948.81-56,357.36

Finding the Fourth Proportional to 81,784.88, 112,948.81 and 56,357.36

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Solution

The fourth proportional to 81,784.88, 112,948.81 and 56,357.36 is: 77,832.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,784.88 : 112,948.81 = 56,357.36 : x
  2. Step 2: Convert to fraction form
    81,784.88/112,948.81 = 56,357.36/x
  3. Step 3: Cross multiply
    81,784.88x = 112,948.81 × 56,357.36
  4. Step 4: Simplify right side
    81,784.88x = 6,365,496,746.74
  5. Step 5: Solve for x
    x = 6,365,496,746.74/81,784.88
  6. Step 6: Final answer
    x = 77,832.20

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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.