Home / 66,185,719.80-99,287,910.90-20,742,775.80

Finding the Fourth Proportional to 66,185,719.80, 99,287,910.90 and 20,742,775.80

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Solution

The fourth proportional to 66,185,719.80, 99,287,910.90 and 20,742,775.80 is: 31,117,088.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,185,719.80 : 99,287,910.90 = 20,742,775.80 : x
  2. Step 2: Convert to fraction form
    66,185,719.80/99,287,910.90 = 20,742,775.80/x
  3. Step 3: Cross multiply
    66,185,719.80x = 99,287,910.90 × 20,742,775.80
  4. Step 4: Simplify right side
    66,185,719.80x = 2,059,506,875,449,076.50
  5. Step 5: Solve for x
    x = 2,059,506,875,449,076.50/66,185,719.80
  6. Step 6: Final answer
    x = 31,117,088.12

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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.