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Finding the Fourth Proportional to 105,312.60, 158,031.30 and 38,799.48

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Solution

The fourth proportional to 105,312.60, 158,031.30 and 38,799.48 is: 58,222.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,312.60 : 158,031.30 = 38,799.48 : x
  2. Step 2: Convert to fraction form
    105,312.60/158,031.30 = 38,799.48/x
  3. Step 3: Cross multiply
    105,312.60x = 158,031.30 × 38,799.48
  4. Step 4: Simplify right side
    105,312.60x = 6,131,532,263.72
  5. Step 5: Solve for x
    x = 6,131,532,263.72/105,312.60
  6. Step 6: Final answer
    x = 58,222.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.