Home / 78,088.91-117,181.55-30,695.70

Finding the Fourth Proportional to 78,088.91, 117,181.55 and 30,695.70

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Solution

The fourth proportional to 78,088.91, 117,181.55 and 30,695.70 is: 46,062.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,088.91 : 117,181.55 = 30,695.70 : x
  2. Step 2: Convert to fraction form
    78,088.91/117,181.55 = 30,695.70/x
  3. Step 3: Cross multiply
    78,088.91x = 117,181.55 × 30,695.70
  4. Step 4: Simplify right side
    78,088.91x = 3,596,970,220.51
  5. Step 5: Solve for x
    x = 3,596,970,220.51/78,088.91
  6. Step 6: Final answer
    x = 46,062.50

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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.