Home / 78,265.85-117,347.73-51,530.92

Finding the Fourth Proportional to 78,265.85, 117,347.73 and 51,530.92

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Solution

The fourth proportional to 78,265.85, 117,347.73 and 51,530.92 is: 77,262.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,265.85 : 117,347.73 = 51,530.92 : x
  2. Step 2: Convert to fraction form
    78,265.85/117,347.73 = 51,530.92/x
  3. Step 3: Cross multiply
    78,265.85x = 117,347.73 × 51,530.92
  4. Step 4: Simplify right side
    78,265.85x = 6,047,036,486.81
  5. Step 5: Solve for x
    x = 6,047,036,486.81/78,265.85
  6. Step 6: Final answer
    x = 77,262.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.