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Finding the Fourth Proportional to 85,259,604.80, 127,742,440.80 and 39,728,014.40

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Solution

The fourth proportional to 85,259,604.80, 127,742,440.80 and 39,728,014.40 is: 59,523,540.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,259,604.80 : 127,742,440.80 = 39,728,014.40 : x
  2. Step 2: Convert to fraction form
    85,259,604.80/127,742,440.80 = 39,728,014.40/x
  3. Step 3: Cross multiply
    85,259,604.80x = 127,742,440.80 × 39,728,014.40
  4. Step 4: Simplify right side
    85,259,604.80x = 5,074,953,527,593,547
  5. Step 5: Solve for x
    x = 5,074,953,527,593,547/85,259,604.80
  6. Step 6: Final answer
    x = 59,523,540.36

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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.