Home / 67,415.20-93,018.72-39,117.28

Finding the Fourth Proportional to 67,415.20, 93,018.72 and 39,117.28

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Solution

The fourth proportional to 67,415.20, 93,018.72 and 39,117.28 is: 53,973.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,415.20 : 93,018.72 = 39,117.28 : x
  2. Step 2: Convert to fraction form
    67,415.20/93,018.72 = 39,117.28/x
  3. Step 3: Cross multiply
    67,415.20x = 93,018.72 × 39,117.28
  4. Step 4: Simplify right side
    67,415.20x = 3,638,639,315.48
  5. Step 5: Solve for x
    x = 3,638,639,315.48/67,415.20
  6. Step 6: Final answer
    x = 53,973.57

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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.