Home / 66,112,284.90-99,168,427.35-20,688,003.30

Finding the Fourth Proportional to 66,112,284.90, 99,168,427.35 and 20,688,003.30

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Solution

The fourth proportional to 66,112,284.90, 99,168,427.35 and 20,688,003.30 is: 31,032,004.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,112,284.90 : 99,168,427.35 = 20,688,003.30 : x
  2. Step 2: Convert to fraction form
    66,112,284.90/99,168,427.35 = 20,688,003.30/x
  3. Step 3: Cross multiply
    66,112,284.90x = 99,168,427.35 × 20,688,003.30
  4. Step 4: Simplify right side
    66,112,284.90x = 2,051,596,752,272,610.25
  5. Step 5: Solve for x
    x = 2,051,596,752,272,610.25/66,112,284.90
  6. Step 6: Final answer
    x = 31,032,004.95

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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.