Home / 101,442.69-139,989.60-56,117.25

Finding the Fourth Proportional to 101,442.69, 139,989.60 and 56,117.25

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Solution

The fourth proportional to 101,442.69, 139,989.60 and 56,117.25 is: 77,441.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,442.69 : 139,989.60 = 56,117.25 : x
  2. Step 2: Convert to fraction form
    101,442.69/139,989.60 = 56,117.25/x
  3. Step 3: Cross multiply
    101,442.69x = 139,989.60 × 56,117.25
  4. Step 4: Simplify right side
    101,442.69x = 7,855,831,380.60
  5. Step 5: Solve for x
    x = 7,855,831,380.60/101,442.69
  6. Step 6: Final answer
    x = 77,441.08

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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.