Home / 91,985.78-126,936.78-56,235.62

Finding the Fourth Proportional to 91,985.78, 126,936.78 and 56,235.62

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Solution

The fourth proportional to 91,985.78, 126,936.78 and 56,235.62 is: 77,602.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,985.78 : 126,936.78 = 56,235.62 : x
  2. Step 2: Convert to fraction form
    91,985.78/126,936.78 = 56,235.62/x
  3. Step 3: Cross multiply
    91,985.78x = 126,936.78 × 56,235.62
  4. Step 4: Simplify right side
    91,985.78x = 7,138,368,524.10
  5. Step 5: Solve for x
    x = 7,138,368,524.10/91,985.78
  6. Step 6: Final answer
    x = 77,602.96

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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.