Home / 69,012,003.60-103,518,005.40-21,136,726.80

Finding the Fourth Proportional to 69,012,003.60, 103,518,005.40 and 21,136,726.80

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Solution

The fourth proportional to 69,012,003.60, 103,518,005.40 and 21,136,726.80 is: 31,705,090.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,012,003.60 : 103,518,005.40 = 21,136,726.80 : x
  2. Step 2: Convert to fraction form
    69,012,003.60/103,518,005.40 = 21,136,726.80/x
  3. Step 3: Cross multiply
    69,012,003.60x = 103,518,005.40 × 21,136,726.80
  4. Step 4: Simplify right side
    69,012,003.60x = 2,188,031,799,020,725
  5. Step 5: Solve for x
    x = 2,188,031,799,020,725/69,012,003.60
  6. Step 6: Final answer
    x = 31,705,090.20

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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.