Home / 85,521.12-118,005.90-47,788.08

Finding the Fourth Proportional to 85,521.12, 118,005.90 and 47,788.08

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Solution

The fourth proportional to 85,521.12, 118,005.90 and 47,788.08 is: 65,940.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,521.12 : 118,005.90 = 47,788.08 : x
  2. Step 2: Convert to fraction form
    85,521.12/118,005.90 = 47,788.08/x
  3. Step 3: Cross multiply
    85,521.12x = 118,005.90 × 47,788.08
  4. Step 4: Simplify right side
    85,521.12x = 5,639,275,389.67
  5. Step 5: Solve for x
    x = 5,639,275,389.67/85,521.12
  6. Step 6: Final answer
    x = 65,940.15

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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.