Home / 42,934,301.80-64,379,291.10-12,638,228.20

Finding the Fourth Proportional to 42,934,301.80, 64,379,291.10 and 12,638,228.20

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Solution

The fourth proportional to 42,934,301.80, 64,379,291.10 and 12,638,228.20 is: 18,950,818.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,934,301.80 : 64,379,291.10 = 12,638,228.20 : x
  2. Step 2: Convert to fraction form
    42,934,301.80/64,379,291.10 = 12,638,228.20/x
  3. Step 3: Cross multiply
    42,934,301.80x = 64,379,291.10 × 12,638,228.20
  4. Step 4: Simplify right side
    42,934,301.80x = 813,640,172,276,029
  5. Step 5: Solve for x
    x = 813,640,172,276,029/42,934,301.80
  6. Step 6: Final answer
    x = 18,950,818.77

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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.