Home / 78,575.67-108,437.09-42,766.98

Finding the Fourth Proportional to 78,575.67, 108,437.09 and 42,766.98

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Solution

The fourth proportional to 78,575.67, 108,437.09 and 42,766.98 is: 59,019.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,575.67 : 108,437.09 = 42,766.98 : x
  2. Step 2: Convert to fraction form
    78,575.67/108,437.09 = 42,766.98/x
  3. Step 3: Cross multiply
    78,575.67x = 108,437.09 × 42,766.98
  4. Step 4: Simplify right side
    78,575.67x = 4,637,526,645.45
  5. Step 5: Solve for x
    x = 4,637,526,645.45/78,575.67
  6. Step 6: Final answer
    x = 59,019.88

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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.