Home / 78,484.32-108,307.55-58,430.88

Finding the Fourth Proportional to 78,484.32, 108,307.55 and 58,430.88

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Solution

The fourth proportional to 78,484.32, 108,307.55 and 58,430.88 is: 80,634.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,484.32 : 108,307.55 = 58,430.88 : x
  2. Step 2: Convert to fraction form
    78,484.32/108,307.55 = 58,430.88/x
  3. Step 3: Cross multiply
    78,484.32x = 108,307.55 × 58,430.88
  4. Step 4: Simplify right side
    78,484.32x = 6,328,505,164.99
  5. Step 5: Solve for x
    x = 6,328,505,164.99/78,484.32
  6. Step 6: Final answer
    x = 80,634.01

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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.