Home / 78,820.08-118,077.68-66,017.84

Finding the Fourth Proportional to 78,820.08, 118,077.68 and 66,017.84

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Solution

The fourth proportional to 78,820.08, 118,077.68 and 66,017.84 is: 98,899.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,820.08 : 118,077.68 = 66,017.84 : x
  2. Step 2: Convert to fraction form
    78,820.08/118,077.68 = 66,017.84/x
  3. Step 3: Cross multiply
    78,820.08x = 118,077.68 × 66,017.84
  4. Step 4: Simplify right side
    78,820.08x = 7,795,233,385.81
  5. Step 5: Solve for x
    x = 7,795,233,385.81/78,820.08
  6. Step 6: Final answer
    x = 98,899.08

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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.