Home / 78,403.02-108,198.18-42,595.08

Finding the Fourth Proportional to 78,403.02, 108,198.18 and 42,595.08

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Solution

The fourth proportional to 78,403.02, 108,198.18 and 42,595.08 is: 58,782.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,403.02 : 108,198.18 = 42,595.08 : x
  2. Step 2: Convert to fraction form
    78,403.02/108,198.18 = 42,595.08/x
  3. Step 3: Cross multiply
    78,403.02x = 108,198.18 × 42,595.08
  4. Step 4: Simplify right side
    78,403.02x = 4,608,710,132.95
  5. Step 5: Solve for x
    x = 4,608,710,132.95/78,403.02
  6. Step 6: Final answer
    x = 58,782.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.