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Finding the Fourth Proportional to 91,886.70, 126,823.41 and 56,069.04

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Solution

The fourth proportional to 91,886.70, 126,823.41 and 56,069.04 is: 77,387.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,886.70 : 126,823.41 = 56,069.04 : x
  2. Step 2: Convert to fraction form
    91,886.70/126,823.41 = 56,069.04/x
  3. Step 3: Cross multiply
    91,886.70x = 126,823.41 × 56,069.04
  4. Step 4: Simplify right side
    91,886.70x = 7,110,866,848.23
  5. Step 5: Solve for x
    x = 7,110,866,848.23/91,886.70
  6. Step 6: Final answer
    x = 77,387.34

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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.