Home / 30,237.60-45,307.80-25,280.40

Finding the Fourth Proportional to 30,237.60, 45,307.80 and 25,280.40

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Solution

The fourth proportional to 30,237.60, 45,307.80 and 25,280.40 is: 37,879.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,237.60 : 45,307.80 = 25,280.40 : x
  2. Step 2: Convert to fraction form
    30,237.60/45,307.80 = 25,280.40/x
  3. Step 3: Cross multiply
    30,237.60x = 45,307.80 × 25,280.40
  4. Step 4: Simplify right side
    30,237.60x = 1,145,399,307.12
  5. Step 5: Solve for x
    x = 1,145,399,307.12/30,237.60
  6. Step 6: Final answer
    x = 37,879.97

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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.