Home / 78,602.07-108,467.45-42,792.21

Finding the Fourth Proportional to 78,602.07, 108,467.45 and 42,792.21

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Solution

The fourth proportional to 78,602.07, 108,467.45 and 42,792.21 is: 59,051.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,602.07 : 108,467.45 = 42,792.21 : x
  2. Step 2: Convert to fraction form
    78,602.07/108,467.45 = 42,792.21/x
  3. Step 3: Cross multiply
    78,602.07x = 108,467.45 × 42,792.21
  4. Step 4: Simplify right side
    78,602.07x = 4,641,561,684.60
  5. Step 5: Solve for x
    x = 4,641,561,684.60/78,602.07
  6. Step 6: Final answer
    x = 59,051.39

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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.