Home / 40,152,995.91-55,411,466.49-21,818,281.41

Finding the Fourth Proportional to 40,152,995.91, 55,411,466.49 and 21,818,281.41

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Solution

The fourth proportional to 40,152,995.91, 55,411,466.49 and 21,818,281.41 is: 30,109,408.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,152,995.91 : 55,411,466.49 = 21,818,281.41 : x
  2. Step 2: Convert to fraction form
    40,152,995.91/55,411,466.49 = 21,818,281.41/x
  3. Step 3: Cross multiply
    40,152,995.91x = 55,411,466.49 × 21,818,281.41
  4. Step 4: Simplify right side
    40,152,995.91x = 1,208,982,969,219,605
  5. Step 5: Solve for x
    x = 1,208,982,969,219,605/40,152,995.91
  6. Step 6: Final answer
    x = 30,109,408.82

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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.