Home / 90,699.14-125,032.96-63,390.44

Finding the Fourth Proportional to 90,699.14, 125,032.96 and 63,390.44

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Solution

The fourth proportional to 90,699.14, 125,032.96 and 63,390.44 is: 87,386.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,699.14 : 125,032.96 = 63,390.44 : x
  2. Step 2: Convert to fraction form
    90,699.14/125,032.96 = 63,390.44/x
  3. Step 3: Cross multiply
    90,699.14x = 125,032.96 × 63,390.44
  4. Step 4: Simplify right side
    90,699.14x = 7,925,894,348.90
  5. Step 5: Solve for x
    x = 7,925,894,348.90/90,699.14
  6. Step 6: Final answer
    x = 87,386.65

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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.