Home / 78,400.24-108,193.08-42,590.52

Finding the Fourth Proportional to 78,400.24, 108,193.08 and 42,590.52

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Solution

The fourth proportional to 78,400.24, 108,193.08 and 42,590.52 is: 58,775.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,400.24 : 108,193.08 = 42,590.52 : x
  2. Step 2: Convert to fraction form
    78,400.24/108,193.08 = 42,590.52/x
  3. Step 3: Cross multiply
    78,400.24x = 108,193.08 × 42,590.52
  4. Step 4: Simplify right side
    78,400.24x = 4,607,999,537.60
  5. Step 5: Solve for x
    x = 4,607,999,537.60/78,400.24
  6. Step 6: Final answer
    x = 58,775.32

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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.