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Finding the Fourth Proportional to 72,579,680.70, 109,031,722.65 and 60,635,744.70

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Solution

The fourth proportional to 72,579,680.70, 109,031,722.65 and 60,635,744.70 is: 91,089,126.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,579,680.70 : 109,031,722.65 = 60,635,744.70 : x
  2. Step 2: Convert to fraction form
    72,579,680.70/109,031,722.65 = 60,635,744.70/x
  3. Step 3: Cross multiply
    72,579,680.70x = 109,031,722.65 × 60,635,744.70
  4. Step 4: Simplify right side
    72,579,680.70x = 6,611,219,698,806,608
  5. Step 5: Solve for x
    x = 6,611,219,698,806,608/72,579,680.70
  6. Step 6: Final answer
    x = 91,089,126.25

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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.