Home / 78,073.42-117,038.36-28,141.30

Finding the Fourth Proportional to 78,073.42, 117,038.36 and 28,141.30

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Solution

The fourth proportional to 78,073.42, 117,038.36 and 28,141.30 is: 42,186.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,073.42 : 117,038.36 = 28,141.30 : x
  2. Step 2: Convert to fraction form
    78,073.42/117,038.36 = 28,141.30/x
  3. Step 3: Cross multiply
    78,073.42x = 117,038.36 × 28,141.30
  4. Step 4: Simplify right side
    78,073.42x = 3,293,611,600.27
  5. Step 5: Solve for x
    x = 3,293,611,600.27/78,073.42
  6. Step 6: Final answer
    x = 42,186.08

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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.