Home / 12,071,125.80-18,106,688.70-3,985,349.40

Finding the Fourth Proportional to 12,071,125.80, 18,106,688.70 and 3,985,349.40

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Solution

The fourth proportional to 12,071,125.80, 18,106,688.70 and 3,985,349.40 is: 5,978,024.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,071,125.80 : 18,106,688.70 = 3,985,349.40 : x
  2. Step 2: Convert to fraction form
    12,071,125.80/18,106,688.70 = 3,985,349.40/x
  3. Step 3: Cross multiply
    12,071,125.80x = 18,106,688.70 × 3,985,349.40
  4. Step 4: Simplify right side
    12,071,125.80x = 72,161,480,946,531.78
  5. Step 5: Solve for x
    x = 72,161,480,946,531.78/12,071,125.80
  6. Step 6: Final answer
    x = 5,978,024.10

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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.