Home / 83,972.40-115,905.66-55,312.98

Finding the Fourth Proportional to 83,972.40, 115,905.66 and 55,312.98

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Solution

The fourth proportional to 83,972.40, 115,905.66 and 55,312.98 is: 76,347.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,972.40 : 115,905.66 = 55,312.98 : x
  2. Step 2: Convert to fraction form
    83,972.40/115,905.66 = 55,312.98/x
  3. Step 3: Cross multiply
    83,972.40x = 115,905.66 × 55,312.98
  4. Step 4: Simplify right side
    83,972.40x = 6,411,087,453.47
  5. Step 5: Solve for x
    x = 6,411,087,453.47/83,972.40
  6. Step 6: Final answer
    x = 76,347.56

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1.5x scale

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.