Home / 78,444.68-117,665.93-19,280.86

Finding the Fourth Proportional to 78,444.68, 117,665.93 and 19,280.86

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Solution

The fourth proportional to 78,444.68, 117,665.93 and 19,280.86 is: 28,921.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,444.68 : 117,665.93 = 19,280.86 : x
  2. Step 2: Convert to fraction form
    78,444.68/117,665.93 = 19,280.86/x
  3. Step 3: Cross multiply
    78,444.68x = 117,665.93 × 19,280.86
  4. Step 4: Simplify right side
    78,444.68x = 2,268,700,077.14
  5. Step 5: Solve for x
    x = 2,268,700,077.14/78,444.68
  6. Step 6: Final answer
    x = 28,921.02

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1.5x scale

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.