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Finding the Fourth Proportional to 78,114.47, 107,799.01 and 43,657.67

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Solution

The fourth proportional to 78,114.47, 107,799.01 and 43,657.67 is: 60,248.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,114.47 : 107,799.01 = 43,657.67 : x
  2. Step 2: Convert to fraction form
    78,114.47/107,799.01 = 43,657.67/x
  3. Step 3: Cross multiply
    78,114.47x = 107,799.01 × 43,657.67
  4. Step 4: Simplify right side
    78,114.47x = 4,706,253,765.26
  5. Step 5: Solve for x
    x = 4,706,253,765.26/78,114.47
  6. Step 6: Final answer
    x = 60,248.17

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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.