Home / 78,280.08-117,434.16-36,726

Finding the Fourth Proportional to 78,280.08, 117,434.16 and 36,726

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Solution

The fourth proportional to 78,280.08, 117,434.16 and 36,726 is: 55,095.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,280.08 : 117,434.16 = 36,726 : x
  2. Step 2: Convert to fraction form
    78,280.08/117,434.16 = 36,726/x
  3. Step 3: Cross multiply
    78,280.08x = 117,434.16 × 36,726
  4. Step 4: Simplify right side
    78,280.08x = 4,312,886,960.16
  5. Step 5: Solve for x
    x = 4,312,886,960.16/78,280.08
  6. Step 6: Final answer
    x = 55,095.59

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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.