Home / 75,397.90-112,999.65-57,780.40

Finding the Fourth Proportional to 75,397.90, 112,999.65 and 57,780.40

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Solution

The fourth proportional to 75,397.90, 112,999.65 and 57,780.40 is: 86,596.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,397.90 : 112,999.65 = 57,780.40 : x
  2. Step 2: Convert to fraction form
    75,397.90/112,999.65 = 57,780.40/x
  3. Step 3: Cross multiply
    75,397.90x = 112,999.65 × 57,780.40
  4. Step 4: Simplify right side
    75,397.90x = 6,529,164,976.86
  5. Step 5: Solve for x
    x = 6,529,164,976.86/75,397.90
  6. Step 6: Final answer
    x = 86,596.11

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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.