Home / 78,410.02-117,500.20-38,888.21

Finding the Fourth Proportional to 78,410.02, 117,500.20 and 38,888.21

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Solution

The fourth proportional to 78,410.02, 117,500.20 and 38,888.21 is: 58,275.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,410.02 : 117,500.20 = 38,888.21 : x
  2. Step 2: Convert to fraction form
    78,410.02/117,500.20 = 38,888.21/x
  3. Step 3: Cross multiply
    78,410.02x = 117,500.20 × 38,888.21
  4. Step 4: Simplify right side
    78,410.02x = 4,569,372,452.64
  5. Step 5: Solve for x
    x = 4,569,372,452.64/78,410.02
  6. Step 6: Final answer
    x = 58,275.36

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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.