Home / 67,987.20-93,820.38-38,916.30

Finding the Fourth Proportional to 67,987.20, 93,820.38 and 38,916.30

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Solution

The fourth proportional to 67,987.20, 93,820.38 and 38,916.30 is: 53,703.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,987.20 : 93,820.38 = 38,916.30 : x
  2. Step 2: Convert to fraction form
    67,987.20/93,820.38 = 38,916.30/x
  3. Step 3: Cross multiply
    67,987.20x = 93,820.38 × 38,916.30
  4. Step 4: Simplify right side
    67,987.20x = 3,651,142,054.19
  5. Step 5: Solve for x
    x = 3,651,142,054.19/67,987.20
  6. Step 6: Final answer
    x = 53,703.37

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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.