Home / 42,776,543.20-64,164,814.80-21,214,472.80

Finding the Fourth Proportional to 42,776,543.20, 64,164,814.80 and 21,214,472.80

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Solution

The fourth proportional to 42,776,543.20, 64,164,814.80 and 21,214,472.80 is: 31,821,709.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,776,543.20 : 64,164,814.80 = 21,214,472.80 : x
  2. Step 2: Convert to fraction form
    42,776,543.20/64,164,814.80 = 21,214,472.80/x
  3. Step 3: Cross multiply
    42,776,543.20x = 64,164,814.80 × 21,214,472.80
  4. Step 4: Simplify right side
    42,776,543.20x = 1,361,222,718,291,637.50
  5. Step 5: Solve for x
    x = 1,361,222,718,291,637.50/42,776,543.20
  6. Step 6: Final answer
    x = 31,821,709.20

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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.