Home / 78,675.59-108,570.93-42,865.85

Finding the Fourth Proportional to 78,675.59, 108,570.93 and 42,865.85

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Solution

The fourth proportional to 78,675.59, 108,570.93 and 42,865.85 is: 59,154.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,675.59 : 108,570.93 = 42,865.85 : x
  2. Step 2: Convert to fraction form
    78,675.59/108,570.93 = 42,865.85/x
  3. Step 3: Cross multiply
    78,675.59x = 108,570.93 × 42,865.85
  4. Step 4: Simplify right side
    78,675.59x = 4,653,985,471.17
  5. Step 5: Solve for x
    x = 4,653,985,471.17/78,675.59
  6. Step 6: Final answer
    x = 59,154.13

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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.