Home / 42,768,021.20-64,152,031.80-25,761,909.20

Finding the Fourth Proportional to 42,768,021.20, 64,152,031.80 and 25,761,909.20

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Solution

The fourth proportional to 42,768,021.20, 64,152,031.80 and 25,761,909.20 is: 38,642,863.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,768,021.20 : 64,152,031.80 = 25,761,909.20 : x
  2. Step 2: Convert to fraction form
    42,768,021.20/64,152,031.80 = 25,761,909.20/x
  3. Step 3: Cross multiply
    42,768,021.20x = 64,152,031.80 × 25,761,909.20
  4. Step 4: Simplify right side
    42,768,021.20x = 1,652,678,818,227,112.50
  5. Step 5: Solve for x
    x = 1,652,678,818,227,112.50/42,768,021.20
  6. Step 6: Final answer
    x = 38,642,863.80

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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.