Home / 78,267.36-117,429.84-31,533.60

Finding the Fourth Proportional to 78,267.36, 117,429.84 and 31,533.60

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Solution

The fourth proportional to 78,267.36, 117,429.84 and 31,533.60 is: 47,312.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,267.36 : 117,429.84 = 31,533.60 : x
  2. Step 2: Convert to fraction form
    78,267.36/117,429.84 = 31,533.60/x
  3. Step 3: Cross multiply
    78,267.36x = 117,429.84 × 31,533.60
  4. Step 4: Simplify right side
    78,267.36x = 3,702,985,602.62
  5. Step 5: Solve for x
    x = 3,702,985,602.62/78,267.36
  6. Step 6: Final answer
    x = 47,312.00

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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.