Home / 81,412.48-112,307.89-55,551.63

Finding the Fourth Proportional to 81,412.48, 112,307.89 and 55,551.63

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Solution

The fourth proportional to 81,412.48, 112,307.89 and 55,551.63 is: 76,633.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,412.48 : 112,307.89 = 55,551.63 : x
  2. Step 2: Convert to fraction form
    81,412.48/112,307.89 = 55,551.63/x
  3. Step 3: Cross multiply
    81,412.48x = 112,307.89 × 55,551.63
  4. Step 4: Simplify right side
    81,412.48x = 6,238,886,737.80
  5. Step 5: Solve for x
    x = 6,238,886,737.80/81,412.48
  6. Step 6: Final answer
    x = 76,633.05

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1.5x scale

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.