Home / 91,926.02-126,871.64-56,136.78

Finding the Fourth Proportional to 91,926.02, 126,871.64 and 56,136.78

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Solution

The fourth proportional to 91,926.02, 126,871.64 and 56,136.78 is: 77,477.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,926.02 : 126,871.64 = 56,136.78 : x
  2. Step 2: Convert to fraction form
    91,926.02/126,871.64 = 56,136.78/x
  3. Step 3: Cross multiply
    91,926.02x = 126,871.64 × 56,136.78
  4. Step 4: Simplify right side
    91,926.02x = 7,122,165,342.92
  5. Step 5: Solve for x
    x = 7,122,165,342.92/91,926.02
  6. Step 6: Final answer
    x = 77,477.14

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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.