Home / 86,945.40-130,442.40-42,573.60

Finding the Fourth Proportional to 86,945.40, 130,442.40 and 42,573.60

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Solution

The fourth proportional to 86,945.40, 130,442.40 and 42,573.60 is: 63,872.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,945.40 : 130,442.40 = 42,573.60 : x
  2. Step 2: Convert to fraction form
    86,945.40/130,442.40 = 42,573.60/x
  3. Step 3: Cross multiply
    86,945.40x = 130,442.40 × 42,573.60
  4. Step 4: Simplify right side
    86,945.40x = 5,553,402,560.64
  5. Step 5: Solve for x
    x = 5,553,402,560.64/86,945.40
  6. Step 6: Final answer
    x = 63,872.30

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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.