Home / 56,646.12-78,172.55-31,153.60

Finding the Fourth Proportional to 56,646.12, 78,172.55 and 31,153.60

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Solution

The fourth proportional to 56,646.12, 78,172.55 and 31,153.60 is: 42,992.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,646.12 : 78,172.55 = 31,153.60 : x
  2. Step 2: Convert to fraction form
    56,646.12/78,172.55 = 31,153.60/x
  3. Step 3: Cross multiply
    56,646.12x = 78,172.55 × 31,153.60
  4. Step 4: Simplify right side
    56,646.12x = 2,435,355,807.05
  5. Step 5: Solve for x
    x = 2,435,355,807.05/56,646.12
  6. Step 6: Final answer
    x = 42,992.46

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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.