Home / 91,317.45-126,017.71-51,031.20

Finding the Fourth Proportional to 91,317.45, 126,017.71 and 51,031.20

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Solution

The fourth proportional to 91,317.45, 126,017.71 and 51,031.20 is: 70,422.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,317.45 : 126,017.71 = 51,031.20 : x
  2. Step 2: Convert to fraction form
    91,317.45/126,017.71 = 51,031.20/x
  3. Step 3: Cross multiply
    91,317.45x = 126,017.71 × 51,031.20
  4. Step 4: Simplify right side
    91,317.45x = 6,430,834,962.55
  5. Step 5: Solve for x
    x = 6,430,834,962.55/91,317.45
  6. Step 6: Final answer
    x = 70,422.85

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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.