Home / 78,533.35-117,755.28-53,603.59

Finding the Fourth Proportional to 78,533.35, 117,755.28 and 53,603.59

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Solution

The fourth proportional to 78,533.35, 117,755.28 and 53,603.59 is: 80,374.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,533.35 : 117,755.28 = 53,603.59 : x
  2. Step 2: Convert to fraction form
    78,533.35/117,755.28 = 53,603.59/x
  3. Step 3: Cross multiply
    78,533.35x = 117,755.28 × 53,603.59
  4. Step 4: Simplify right side
    78,533.35x = 6,312,105,749.46
  5. Step 5: Solve for x
    x = 6,312,105,749.46/78,533.35
  6. Step 6: Final answer
    x = 80,374.84

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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.