Home / 91,389.15-126,148.79-62,803.47

Finding the Fourth Proportional to 91,389.15, 126,148.79 and 62,803.47

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Solution

The fourth proportional to 91,389.15, 126,148.79 and 62,803.47 is: 86,690.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,389.15 : 126,148.79 = 62,803.47 : x
  2. Step 2: Convert to fraction form
    91,389.15/126,148.79 = 62,803.47/x
  3. Step 3: Cross multiply
    91,389.15x = 126,148.79 × 62,803.47
  4. Step 4: Simplify right side
    91,389.15x = 7,922,581,748.30
  5. Step 5: Solve for x
    x = 7,922,581,748.30/91,389.15
  6. Step 6: Final answer
    x = 86,690.62

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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.