Home / 91,291.28-125,981.10-51,011.98

Finding the Fourth Proportional to 91,291.28, 125,981.10 and 51,011.98

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Solution

The fourth proportional to 91,291.28, 125,981.10 and 51,011.98 is: 70,396.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,291.28 : 125,981.10 = 51,011.98 : x
  2. Step 2: Convert to fraction form
    91,291.28/125,981.10 = 51,011.98/x
  3. Step 3: Cross multiply
    91,291.28x = 125,981.10 × 51,011.98
  4. Step 4: Simplify right side
    91,291.28x = 6,426,545,353.58
  5. Step 5: Solve for x
    x = 6,426,545,353.58/91,291.28
  6. Step 6: Final answer
    x = 70,396.05

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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.