Home / 78,775.29-108,710.78-42,965.19

Finding the Fourth Proportional to 78,775.29, 108,710.78 and 42,965.19

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Solution

The fourth proportional to 78,775.29, 108,710.78 and 42,965.19 is: 59,292.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,775.29 : 108,710.78 = 42,965.19 : x
  2. Step 2: Convert to fraction form
    78,775.29/108,710.78 = 42,965.19/x
  3. Step 3: Cross multiply
    78,775.29x = 108,710.78 × 42,965.19
  4. Step 4: Simplify right side
    78,775.29x = 4,670,779,102.92
  5. Step 5: Solve for x
    x = 4,670,779,102.92/78,775.29
  6. Step 6: Final answer
    x = 59,292.44

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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.