Home / 71,742,990.90-99,005,084.64-40,381,022.10

Finding the Fourth Proportional to 71,742,990.90, 99,005,084.64 and 40,381,022.10

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Solution

The fourth proportional to 71,742,990.90, 99,005,084.64 and 40,381,022.10 is: 55,725,673.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,742,990.90 : 99,005,084.64 = 40,381,022.10 : x
  2. Step 2: Convert to fraction form
    71,742,990.90/99,005,084.64 = 40,381,022.10/x
  3. Step 3: Cross multiply
    71,742,990.90x = 99,005,084.64 × 40,381,022.10
  4. Step 4: Simplify right side
    71,742,990.90x = 3,997,926,510,860,210.50
  5. Step 5: Solve for x
    x = 3,997,926,510,860,210.50/71,742,990.90
  6. Step 6: Final answer
    x = 55,725,673.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.