Home / 67,780.32-93,505.20-42,643.68

Finding the Fourth Proportional to 67,780.32, 93,505.20 and 42,643.68

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Solution

The fourth proportional to 67,780.32, 93,505.20 and 42,643.68 is: 58,828.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,780.32 : 93,505.20 = 42,643.68 : x
  2. Step 2: Convert to fraction form
    67,780.32/93,505.20 = 42,643.68/x
  3. Step 3: Cross multiply
    67,780.32x = 93,505.20 × 42,643.68
  4. Step 4: Simplify right side
    67,780.32x = 3,987,405,827.14
  5. Step 5: Solve for x
    x = 3,987,405,827.14/67,780.32
  6. Step 6: Final answer
    x = 58,828.37

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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.