Home / 28,003,752-42,012,712.80-7,808,996.16

Finding the Fourth Proportional to 28,003,752, 42,012,712.80 and 7,808,996.16

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Solution

The fourth proportional to 28,003,752, 42,012,712.80 and 7,808,996.16 is: 11,715,469.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,003,752 : 42,012,712.80 = 7,808,996.16 : x
  2. Step 2: Convert to fraction form
    28,003,752/42,012,712.80 = 7,808,996.16/x
  3. Step 3: Cross multiply
    28,003,752x = 42,012,712.80 × 7,808,996.16
  4. Step 4: Simplify right side
    28,003,752x = 328,077,112,926,382.81
  5. Step 5: Solve for x
    x = 328,077,112,926,382.81/28,003,752
  6. Step 6: Final answer
    x = 11,715,469.87

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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.